Pretty simple, what things can't you understand?
Y'know what I don't get? Strip clubs. So...you pay somebody to arouse you, and then...what? I mean, you're in public, goes without saying that you can't just "relieve" yourself in front of the stripper. Aside from it being illegal, that's just inconsiderate. It's pretty much porn, in real life, and you can't release that built up sexual energy in any way.
The only partway believable reason would be to increase your own sexual agressiveness in going out to try and "pull". Which really only raises the chances of being seen as desperate, and the stakes should you fail, because after beginning a night with a strip club and ending with masses of rejection, your balls would surely be more blue than papa smurf.
...
Reading that back, I realise just how out of touch with normal social function I am.