I'm not convincing you to use one, and yes I've tried a windows phone. Honestly I like it. It's more stable than Android and the UI on the Lumia 800 is smooth as Androids with higher specs. The only thing that held me back was it was that or a tablet (which I needed at the time) and lack of certain apps (which developers have promised to address). Granted I probably haven't had time to dig in enough, but I'm reserving my judgement since windows phone 8 uses a quote new kernel extending additional capabilities.
And I wasn't saying your whole argument is invalid. I'm saying your argument about not being to bluetooth a song is invalid. Hell just email it or share it to another person's dropbox.
SugarSync and DropBox Referrals
(gives 5gb free on registration)
(gives 2gb free on registration)