I want to preface this post by stating that I am adamantly anti-abortion.
However, why does anyone think that prohibition will work any differently in that case than in any other case where prohibition was tried? To think that passing a law against it would reduce the number of abortions is being intellectually inconsistent.
Of course I see the difference between drugs and abortion, one being a victimless crime while abortion has a clear victim, being the child. But from a strictly results-based point of view, what does anyone hope to accomplish by prohibiting it?
Just like with anything else, education is the best answer.