LOL. I'm not an old dude, and I'm a working man... but a lot of these "old bums" you see in the club aren't actually bums. They have money. Which is why dancers flock to them. A lot of those guys you see could have huge net worths, but you'd never know because of their appearance. Just saying. Just look at the Facebook Founder:
https://i.pinimg.com/originals/d2/08...6f41c2d15d.jpg
Doesn't look like he would be a billionaire, but he is.
However, there are also dudes in their, just like you said, who are bums. I can't deny that. But a lot of them have money.
Not every old dude has money either. If you're a good conversationalist, they will also flock to you. Had an older friend once who had 0 money, but would go to clubs with me. He always had the waitresses, the doorman, the dancers and the managers happy to see him and they would talk him up a storm, because he had a gift for gab. There are some men out there like that, but not a lot.
Bottom line. These dudes have money to burn.