Like mentioned many times before. No one has the right to tell a woman what to do with her body.
There shouldn't even be a debate about this.
If you believe that abortion is killing a child then DON'T DO IT
If you believe that abortion can be a good thing, or neccasary to do then good for you go for it.
It should be the persons choice wether to have an abortion or not, just because people believe in something ( such as a religion that goes against abortion) doesn't mean that everyone does.
Let the person decided depending on there situation, depending on what they want their future to be.