dc0776 saidI don't go to a lot of bars/clubs these days, but the ones I did go to were always pretty mixed. The gay bars in town attract a certain amount of straight people as well.
There never has been any sort of strict segregation, at least here, nor should there be.
Most of my straight friends that have gone to gay bars understand that they might be hit on and just politely decline if that happens.
Personally, when I go out, it's usually to hang out and be social, rather than get laid, so it doesn't bother me in the slightest.
I don't mind straight people in gay bars, we sometimes invite our straight friends into gay restaurants & bars with us. Nor do I have trouble going into straight bars (when they'll have us), and there's also a local lesbian bar we regularly go into.
But I still like a largely gay atmosphere, where we can discuss gay topics openly, gay magazines & newspapers are stocked, and PDAs aren't a problem.
For 7 years I only had one gay bar available within over a 100-mile radius. It was also near 3 different college campuses, so it saw lots of straight students who would go there out of curiosity, or on a dare, or because it had the best dance floor and DJ in town.
I liked the idea that straights were mingling with us, maybe break down some misconceptions and become friendlier to us in other ways. But unfortunately some of them were just loud & obnoxious, especially the female students.
Along with their male companions who came along under protest in many cases, proclaiming to everyone non-stop how they weren't gay themselves. And looking to pick a fight with any gay guy they thought looked at them funny.
So another situation where I didn't think the mix worked well much of the time, despite my idealism. Therefore I do often feel more comfortable with other gays, but is that any different from bars that tend to sort along age lines, or income levels, or interests like sports, and so forth?
Many straight bars try to intentionally specialize in those niches, so what's wrong with having a gay bar? Just like there can be sports bars, martini bars and wine bars, singles bars and video bars, there can certainly be gay bars, and if there's a local demand for them then they'll thrive.
And even within the gay community the bars in larger markets (like here) specialize even more, catering to bears, leather, twinks, seniors, and lovers of piano lounges, sports, club music, male strippers, drag queens, dancing, etc, etc. I'm not sure what would happen to those interests if gay bars went away, and every bar was sexually "generic".