why do men always want to stick their cock in someone's ass?

There are a lot of women that enjoy receiving anal. I remember my wife spent her summer vacation in anal training. By Christmas time, she was demanding it.

Quote by Seeker4

I think rubbing against a crack or what you describe might actually be more interesting to me than actual anal. Similar to how I find frotting an appealing idea, even though I have never done it.

I wrote Dreaming and Creaming a few years ago, featuring precisely the act you describe: a guy rubbing in an ass crack until he cums, never actually entering the hole. I think that could still be incredibly satisfying for both partners, especially with lots of lube (or foreskin, as in this story).

Would make for a nice, low-pressure situation for someone unsure about whether they want to be an anal recipient. If they're not ready, no big deal and still a very hot way for their partner to get off. On the other hand, if the lust does strike in the moment and they're ready to open up, no pause needed because they're pre-lubed. Is probably how I'd do it if I pursued anal.