There are machines that will keep very young fetuses alive, and until you've watched a video of an abortion, you don't understand that it doesn't compare to anything in terms of cruelty.
Your premise for the abolition of contraception is misguided, but fundamentally correct. Your method is not. Ban it, and every Chinese businessman will jump on a boat-load of condoms and bring it here.
It was brought up that pre-marital sex is the only problematic area in terms of contraceptive use. You therefore propose we tyrannize the youth even more, and give them death for following the path we've carved to rebellion. Not very insightful, buddy.
The way to change this problem is to change the society, and the way to do that is the slow process of changing others, and the quickest way to do that is to change yourself. Promote the right way, be a loving person and show others your boundaries, and you will make a difference, although you will never succeed completely for any society until the messiah comes. Also, you have absolutely no chance of success as an agnostic, because you are then doing this for honor, and in a weak moment you will surely reach out to what you oppose. You can not do this for honor, because that is not a constant, G-d is. I'm not going to preach to anyone, but if you want to keep up these ideals, know where they come from and believe it, if you indeed are called to follow it.
As a 15 year old in what I am assuming is the states, he is likely exposed daily and encouraged to try all manner of birth control, even in school. This I disagree with, I don't want my fifteen year old daughter to have to have a conversation with me about her teacher's studded condom preference, and the first rule of marketing is that a more a product is advertised, the more it is bought, so yes, ban propagating kids with things like "safe sex", (which is the ultimate in liberal Orwellian terms, considering you don't know the person well enough to ensure they're not diseased (and by that logic, also an axe murderer), you don't trust the person enough to have a kid with them (which follows, don't love them or trust them to take care of you), you are too young to care for a kid (and also likely too young not to get yourself into all manner of trouble when left to your own vices), or you are too poor, which isn't any excuse for not having kids, but you certainly should focus on G-d's first commandment to man before the second one.) and lots of other crap they feed kids in the schools, but computer gaming destroys as many lives as contraceptives, though tyrannizing it would make it worse for the abusers, and would be unfair to those that use it in accordance with G-dly law, as with contraceptives.
My gut tells me you're a s*** disturber trying to make this site absurd, though I'll take your word that you're a kid trying to learn for now, but seriously think about what you say when before you post, unless you're good at not thinking (still probably bad), and think about what others respond to you; don't make people waste words that are doing you a favor.