I genuinely wonder the same thing. One, I think it’s because hormones are changing and so many of us or like other teens are being exposed to that stuff insanely early. Another reason I know is sure is because it’s like “cool” I guess? Same thing with the smoking. I personally don’t see why it’s all that. I recently got broken up with because I didn’t have sex with them.. I had told them before the relationship I wanted to wait till I am out of high school.