Unfortunately there are some men who don't want to lose the full sensation of intercourse and so refuse to wear condoms, in spite of the risks. I know this from experience.

Nowadays I think that it is really up to women to carry condoms and insist that any sexual partner wears one, or no sex. That would be the responsible path to take.

With young people responsibility can so easily be overridden by physical urges (again, I'm talking from experience). IMHO there should be mandatory sex education in schools and easy access to condoms for youngsters. If they are going to be sexually active they will be, so make sure that they are prepared for that eventuality.