Why?
I'm not hearing Why.
The closest thing I'm hearing is that most the guys in your experience took advantage of girls, who fell for it.
That's not valid. I couldn't even count the girls who did the same thing to dudes that I've known, including my SELF, when I was young.
And this isn't about teens mistreating teens, it's about ADULTS mistreating teens.
I'm surprised you haven't brought up the fact that an unwanted pregnancy is harder on the female than the male, but that too would be irrelevant because if a teacher is only letting his female student give him hand jobs in the parking lot, he'd still be arrested.
I'm not singling you out, because the double standard is super-common. But that double standard disgusts me.
Am I the only man here who has known MANY manipulative, sexually voracious teenage girls?!
I myself was relentlessly pursued by a 16 year old girl when I was in my 20's. Among other things, like normal verbal flirting, she grabbed me and kissed me, hoping I'd get sucked in and not be able to resist, and she also asked me if we could "talk", and I said "sure", and when we did, she exposed her breasts and grabbed my hands and put them on her breasts.
I was turned off by her, but my roommate COULDN'T resist. She moved right to him when I "declined", they had sex, and sure enough, when he got tired of her and said he didn't want to see her anymore, she started talking about how "confused" she was, and how she was thinking about telling her parents about the sex they'd had. (blackmail).
See, I'm not so much concerned with the psychological aftermath for the horny teens, I'm pissed about the DOUBLE STANDARD, on MY side, that of the adult.
I had this teenage girl all over me. If I'd been lonely or drunk enough, I may have given in. Then I'D be this reviled monster who deserves to go to prison.
But when the same thing happens with an adult woman, everyone's like, "What's the big DEAL?! It's cute. Kudos!

"
Or, "Where were wonderful teachers like this when I was in school?!

"
See, that's why the Double Standard pisses me off.