Banning abortion doesn't stop abortion, it just shifts it to a black market where women are far more likely to die.
Perhaps, but it will likely at least severely reduce it. It's certainly not appropriate to assume that every woman who would have had an abortion when it's safe and legal would also do so when it's dangerous and illegal. More likely, it would lead to a rise in babies given up for adoption.
Why stop there? You have no idea, right? So why do you masturbate or use condoms? You're killing millions of potential babies!
Not the guy you're responding to, but you have a point. Coincidentally, most religions are also against both, so at least you can't accuse them of being inconsistent on the issue of reproduction.
So you're saying it's better to perfectly kill babies than to imperfectly give them up for adoption?
Yeah, I'm going to need a source on that.