If our culture had any goddamn consistency, STIs, in a man at least, ought to be seen as a sign of virility. I mean, what better proof that you've at least had sex, and stereotypically that you're really getting around?
"You've got herpes? HIGH FIVE DUDE."
"Oh man, look at that guy, you just know he doesn't even carry HPV."
"Am I any good? Baby, I've got chlamydia and gonorrhea."