My ideas...StandardIzation, simplicity, and security...but who's really trying to convince who here?
Android is the most vastly used mobile OS and you either love it or you don't. I used it for a long time because it was popular, cheap, sometimes free depending what I got it on, and I could not afford apple.
My work gave me my first iPhone 4. It was neat, smooth, and everything had its own place. I could be two more pages explaining what I mean by that in detail, so hopefully you can look holistically at this and know what I mean. You'll find this with windows mobile and iOS. I stopped using Android completely just recently and won't use it again unless it is provided to me or handed down. Granted they're cool to look at and all, but there are other things more important than that. I am fine with tweaking and fixing so i can bare the Windows Mobile in its existence currently. The company I work for will not support anything other than iOS, WP8, W10M, and Blackberry (while its still around) and I can respect that and the reasons why. I don't have anything against Androids but plan to keep using Windows and iOS devices. That's the beauty of having many choices for things we use and depend on. We are not a one glove fits all kind of people anymore. It is a good thing all of them are around.