Wow, this thread has been going for some time. Very sorry if I repeat something that's been said, but it's a lot to go through.
First, I have to say I'm loving that leather pants are becoming a wee bit more normal, even if they never attain full acceptance in the mainstream.
I guess where I'm a bit different compared with most of those who've posted on this thread is that I'm a fairly regular married guy who loves wearing leather pants. About 3 years ago, I found some at Danier at a blowout cost, so I thought the heck with what "everyone" thinks, and went for them. I loved them from first time I tried them on and told my wife almost immediately that I couldn't live with only one pair. Her amazing response was to surprise me with a pair of black leather Gucci pants! Wow, was I shocked. They are so nice and in every way nothing like the stereotypical biker or 80's rocker pants.
Perhaps in part due to the "security" of having a high-fashion name, which seems to help quiet those who have some issue, I've become secure enough wearing them that I even wear them to the office. Sure, I get some looks, but I find that once the initial "what!?" reaction passes, most people say "you know...those are actually really nice". The catch, I think, it what one wears with them. To help avoid the stereotypes, you have to dress them up.
Anyway, sorry for the autobiography, but I just wanted to mention that there are some guys out here who love leather pants and who are secure enough in their "not looking too bad"-ness to wear them.