Statistically, I'd say there is.
I dunno - it was sorta' trendy for a while for straight couples to go to gay clubs - to the point where my gay friends were complaining about all the straight people filling up their favorite gay clubs.
Dunno if that's still trendy.
But I suppose it's different for a straight man to go to a gay club by himself.
Whenever I have been at a gay nightspot, there has always been a straight person there.
Straight couple friends of mine wanted to go to a gay club one time, because of the DJ, but they didn't want to be offensive, so they gayed up the guy. It was all clothes he already owned, but like, he usually wore something under the mesh shirt.... That still makes me laugh.
Was it here we were talking about fighting logos? Have you guys seen this?
I don't think I'd likely go to a gay club
without
a gay person. It's generally been a mixed-group endeavor.
That said, I'm not really a club person.
I've been to a couple of gay nightclubs with an all-straight group though it's been a long time ago, a really long time ago. I'd say at least one of them was a "gay" nightclub since there were so many straight people there.
There have been a few times where I was the only man at a lesbian bar (each time with a lesbian friend). That was kinda' weird. Once there was a wet t-shirt contest, which was more funny than anything.
I'll say there's nothing bizarre about straight people going to gay nightclubs, but it's not the usual thing.
I'd say this is the difference between saying 'not unusual' and 'usual'.
I think I've once been to a gay bar without a guy. I'm sure we were annoying to some, and we were treated like toys by others.
eta: I'm just sure most straight people have never been to a gay nightclub.