"The pill doesn't prevent STDs. Maybe you need a sex ed refresher course."
Maybe you need a refresher course on post-reading and sexual culture.
The question was (to paraphrase) "Why weren't our parents' generation as sexually active as today's?".
My answer was that the Pill fueled the Sexual Revolution of the late 60s/70s that helped shape the sexual mores many teens have today. No claims about the Pill and STDs were made by me.
Then why weren't STD's rampant back in the day of our parents and grandparents?