No, they are guilty of terminating a potential human child.
So, are you committing child murder when you er um...pleasure yourself into an old sock?
That's kind of the thing about the debate...of where does an actual "child" begin.
Personally, I feel the same as you on it...but I also feel that I do not have the right to decide this for others. I would never do this with my own flesh and blood, but I also don't believe in forcing my beliefs on others either.
What? Of course it does! It limits resources, it limits opportunities, jobs, housing, etc.