Check out the CDC stats. Teenagers today are actually abstaining from sex at higher rates then ever before and the teen pregnancy rate has dropped by HALF over the course of the last 25 years. So tell me about the other magical time where there was more "self-control, discipline, and tradition" among teenagers than now?

By the way, we've been controlling our fertility since the sexual revolution which started around half a century ago. Since our society hasn't collapsed in 50 years I can assume additional and safer options to control our fertility won't bring a collapse.