@oldladyplays I made this argument 40 years ago in front of a school board. Sex has a billion years of design behind it. It's foolproof.
Do you think you're clever for figuring it out yourself? An idiot can figure it out. This is not an accident.
Teenagers are focused almost exclusively on sex. Every single thing they do is filtered through that focus. You're not going to change this no matter how much you think you ought to. We are designed to make babies.
From Nature's standpoint it is our ONLY relevant function. Yes. Only. Our only relevant function is to pass on our genes. Everything else is decoration. The big brains, high IQ, multitude of talents, all exist or are side-effects of improvements in our ability to win mates and pass on our genes.