What's with all the recent pictures that guys have been posting of their cocks (and sometimes lower abs) with their faces hidden?

I mean this respectfully -- everybody's entitled to their own thing -- but I just don't get it.  Almost nobody's going to decide to have sex with somebody else, or even decide to meet them, based on the beauty of their genitals, abs, chest, or whatever.  No one is going to recognize you on the beach and say hello based on a cock shot.  So is this purely for the pleasure of being able to show the world your penis, or what?

I realize that some people have work and family issues they're concerned with, but most of the cock shots don't appear with someone's name attached to them either.  Why don't you let your freak flag fly and show us your mug?  That way, we can say hello when we see you on the beach.