I will give you an example of the people I do recommend Windows Phone 7 handsets to, though. TL;DR warning as usual, lol.
If the best thing you can say about a smartphone OS is "it's almost as good at being a feature phone as a feature phone," that says something...
(But then, I'm a crotchety bastard who's owned the same chintzy little feature phone for about four years now and sees absolutely no reason to bother with anything newer...)