Ah, your last resort argument. I believe abortion should be legal at the state level.. If you prohibit it, just like drugs, you will not see the number of abortions go down very much and will likely see unintended consequences that you will consider to be equally (or more) loathsome. You will empower the worst criminals and will probably cause more deaths, not fewer.
Overturn Roe v. Wade because the federal government doesn't have that authority, but don't blame me for your failure to convince over half of Americans that the life of a young fetus requires the same protections as one outside the womb. The drug laws don't work because a sizable portion of Americans don't agree with it. It will be the same if abortion is illegal.