Good point kick starting made. I actually ask myself the same thing so I'll be open to reading more responses.
My only thing is: Making friends at the gym has always been a risky proposal. I've struck up conversations with so many guys at the gym, but for some reason haven't come out with much more than a phone number and small talk. Maybe I'd have better luck at a more gay friendly gym rather than these national chains though. I had a guest pass for a small gym in San Francisco and I had the feeling I could make friends there easily.
I think 2 things: one you never know what kind of lifestyle the guy at the gym has. Even if you don't care they're straight, they may care that you're gay. They may not be bothered by it, but they may not know how to approach it. And then, we just don't know them. Half the time, they have kids, they may just work, gym, daily rinse and repeat and only want to make friends with the same co-workers and People in their circle.
It's kinda sad but, most times when I've tried to meet random friends out and about...you learn there's things about them that aren't compatible with you. After the last guy at the gym I spoke to, got his number, and then him later mentioning he wasn't gay or bi, but was not judgemental about it...but then flaked whenever we tried to make plans...I'm kinda over guys at the gym.
These guys at the gym are all dick teases. They're working out in their prime to try and find/keep a girlfriend or whatever, and then once they get married they end up getting fat anyway. If it weren't for me being a model/escort, I'd of stopped going to the gym awhile ago. I like the gym, but it's almost a unfair that after all this time I've not snagged a friend or boyfriend actual FROM the gym.