I did the same thing when I had WM. Exchange is a great product if you need secure email, allowing other people to see your availability, sharepoint, etc. So if you use all that, then it's worth the expense. For me, I don't need that level of sophistication. I just need to sync my calendar and contacts. Gmail sync and outlook connector are surprisingly good.
I don't ever look at my google or live accounts in a Web browser anymore. Everything I need is in Outlook or on my phone.
You can get spam with any email address. There was an email host that got attacked about a month or two ago, and they were the host for many very big companies. I started to get spam in a bunch of my email accounts and still do. I don't know how Exchange would stop that.
Of course spam is always a threat; but I think Exchange hosting companies might have more robust spam filters than a lot of free email clients. I'm not sure how good Google Mail's spam filter is (I've heard much better than Yahoo), but I can only speak from the 4 years I've paid for Exchange hosting-- I get NO spam, and I use my email address everwhere (including several of the companies that were using the compromised host last month). Maybe that just means I've been lucky, but AFAIK my Yahoo mail has never been compromised and it attracts spam like flies to honey.
I fully agree that Exchange hosting is way overboard for 98% of people. Truthfully I don't *need* it; I only use the 4 basic PIM functions-- email, calendar, contacts, and tasks. And I never access OWA from a browser either; Outlook on my home computer or my phone are the only access methods for me as well. Nonetheless, I appreciate the robustness of the system.
And, frankly, I have peace of mind that Google, Yahoo, or MS is not scanning my email content to sell me ads or other questionable practices. I also feel better knowing that my contacts' personal info is not out there amongst the free providers. Maybe I'm being naive in thinking that a paid Exchange host is more secure than free Gmail, Yahoo, or Hotmail. Does anyone have any thoughts about that issue?
-R