there is a difference between providing access to the end user and granting access to malware to automatically access your files. You access files on your computer, does that mean that entire world is getting access to your files. I am not saying restricting access is bad, all i am saying is that it should be smart restriction, restricting you access to your own files on the name of security is the most absurd thing i have ever heard. The security thing is a simple excuse to hide the shortcomings of the developers of not being able to make a smart enough framework which can differentiate between genuine access and fraudulent access of files.
It's absurd until something bad happens--then people of course will blame Microsoft for that too.
Okay, yes, you can access your files on your computer without everyone else accessing it, but I would say there are things that prevent that from happening like your firewall, your anti-virus, user account control, and access control lists. But is that what you want in Windows Phone? Having an anti-virus to protect your phone from malware? Having to grant administrator privileges to individual apps?
And plus, just because Windows and Android have file managers yet people haven't been able to access your files or wreak havoc on your system doesn't mean it's very secure. Why do you think you need a firewall or antivirus? Why does UAC prompt you every time an application wants administrator privileges? Why does Windows get so many security updates? Android also gets security updates too. Why did Google have to introduce Bouncer to their Google Play Store (yet malware is still finding its way into the store)?
Look, I know you want access to your files and do many things with them. I understand that a file manager is probably what you've used in the past, is what you're used to, and is how other OSes handle it, but that doesn't mean it's the best solution for WP. According to a5cent, the file manager you guys are asking for would undermine the security model of Windows Phone. (a5cent, please correct me if I'm wrong or clarify if I misunderstood your previous posts.)
That doesn't mean you shouldn't be allowed to access your files--that's not what we're saying. We're just saying that the file manager isn't the best way to do this and that there are alternative ways to solve this problem without compromising security. This is just something you'll have to just trust us, and more importantly, trust Microsoft on. You may not agree with their decisions, but there's a reason those people work at Microsoft, and the rest of you guys aren't. They know what they're doing, even though it may seem like they're being stupid and stubborn by not giving us a file manager. There are reasons behind their decisions even if they don't tell us. Remember, just because they don't create a file manager doesn't mean Microsoft can't come up with a better way to allow access to your files without compromising security.
I know this probably isn't really the answer most of you are looking for and that you want more details or more examples, but I'm afraid I can't help you there even though I'd love to. I just don't have a background in computer science. Even if I did, the answer probably wouldn't be simple. Sometimes, it's hard to simplify things that can be quite complex. Also, sometimes it's hard to explain things if the other person doesn't have a basic understanding or background of whatever subject I'm explaining.
I can give you a different, but related example about cars though that hopefully will help.
Let's say you had a compact front wheel drive car. Currently, it can complete a lap around a certain track in say 3 minutes and 18 seconds. Now I tell you, go make go around faster. How would you do that? Well, most people without a basic understanding of cars might say something Jeremy Clarkson (if any of you watch Top Gear UK) would say, "POWERRR!!!! It needs a bigger engine!" But see, it isn't as simple as that. Trying to fit a larger engine may cause some problems that normal people wouldn't know about because they don't have a background in cars. One of them might be getting the engine to fit in the engine bay. Remember, this is a compact car, so it's engine bay is probably quite small. But let's say you could get it to fit. But still, there are other problems. With front wheel drive cars, if you have too much power, under hard acceleration, you may get torque steer. (If you don't know what it is, Google it. This is actually a great example of my statement about trying to explain things to people who have no background on a particular subject.) That larger engine you fitted? It probably weighs more. This could upset the balance of the car, making it even more front heavy. It may understeer a lot in the corners. Those are just a few examples of the problems. There are probably others that I may not have even thought of.
So, a larger engine may not be the best solution, but that does not mean it is the only solution. Maybe you could work on the handling instead. You could upgrade the tires, upgrade the suspension. You could reduce the weight of the car, especially unsprung weight. There are many other ways to make a car faster, power is not the only answer. Power may not be the best answer. This can be related to our file access problems--a file manager is not the only solution. It also may not be the best solution. There are other ways to solve the problem, just like we did with the car. And just like how trying to upgrade the engine could cause other problems that you may not understand or know about, adding things to or modifying the OS could cause problems too. Just because you don't know about the problem, don't understand it, or choose to ignore it doesn't mean the issue doesn't exist.
That's why I suggest you leave this problem to the qualified people at Microsoft to solve instead of arguing with us about who's right and who's wrong because we're going nowhere. We don't work at Microsoft, so we can't give you the features you want, and we can't always explain the decisions they make. Instead you can make a suggestion on the Windows Phone feature suggestion site, or vote for the file manager suggestion that is probably already there, but there isn't much else you can do but hope Microsoft listens and finds a solution that satisfies both parties--something that allows a user to access his files without compromising security. The only other thing you can do is switch to a different mobile OS.
And just because Microsoft hasn't come up with a solution yet doesn't mean they're incompetent. Microsoft started late, and the Windows Phone team has been quite busy trying to get WP caught up features-wise with Android and iOS. In addition there are bugs and kinks for them to work out that appeared in WP8 that I don't think existed in WP7. They have to prioritize which features they will work on because they don't have enough resources to do everything at once. Now, some people may not agree with Kids Corner over say, custom notification tones, but it is what it is. Who knows? Maybe Microsoft already working on a solution to be included in a future update, but we just don't know yet.
So in conclusion, either be patient, understand that Microsoft does care, understand that there are reasons why they decided against a file manager, and understand that there are alternative solutions that Microsoft could implement, or just buy a different phone. Simple as that.