Michelangelo was a genius and he was most certainly a homosexual.
If he had been born today, he probably would have been a fabulous interior decorator.
That is, if he'd be allowed to explore and exploit his artistic gifts in whatever medium it took him to. Speaking as an artist, I can say that no matter how good you may be with one medium, you can't force yourself to be as good with another. Michelangelo, from what I know, was one of those rare artists who could pick up pretty much any form of artistic expression and excel at it. And these days, everyone seems to want art "just so" and to heck with expressing yourself in the way you want to; follow the trends! What I do doesn't follow the trends, not really. I don't think Michelangelo would, either - and thus, he likely wouldn't become famous if he did this art now instead of when he did.
Of course, if he'd been born today, he probably wouldn't've needed to be so discreet about his preferences, and who knows whether his art would then show such appreciation of the male physique?
But really, this is all speculation :P
~Moshi-chan