Honestly, I tend to be attracted to guys who aren't stereotypically hot. Cockiness and the tendency to rely on your looks are the biggest turn offs. I'd take Seth Rogan over Brad Pitt any day.
Humans are very simple creatures. You don't need to ask every human on earth to understand something like this.
most men do underwear regardless of sexuality. without undies, they're just dripping peepee in their shorts, and nobody wants that.
Not that you really needed to know, but I prefer Commando If you meant most gay men do I'minmyunderwear, I think the little tyke is still a little fragile for that