Why do some men, have this highschool jock complex; where they want the hot girl, want to be popular, etc, even when they've passed 30?

This question has bugged me for the longest time as I’ve met and dated many of men who have this complex. It irks me especially since I know I’m not the hottest thing in the world but I’ve been rejected solely because I don’t look like the homecoming queen. I would love to hear what others have to say on this subject and help me understand what this is.

Thanks!