We haven't done so well with it, have we? But God wants us of our own free will. My dem husband is slowly coming to believe this. He asked me last night about how God can be in control if He allows abortion to continue. Not so long ago, he wasn't pro-life. I think it was the embryonic stem cell research argument that made him understand the slippery slope argument.
Well, God is in ultimate control, and it is His plan, but He has allowed us free will. Which means we can choose evil and He will let us reap the consequences. That, I think, is what's happening.
It's not that God allows abortion to happen; He always allows us to choose. WE have allowed abortion; we have accepted and tolerated evil. That's what we need to change.