If we are going to call abortion Murder, then we really need to change the definiton of murder legally. As it stands, at least in Texas if I recall correctly, you have to be born and alive to be considered a human being, and murder is the illegal killing of a person who is born and alive.
So then we get into the moral aspect of it... highly debatable issue. Personal beliefs are as varied and strongly vocalized as any religion. Personally, I don't encourage abortion, I don't think it is a birth control option, but I can't see forcing a woman to have a baby she doesnt want.
But then there is the other issue, what if the man wants the baby and the woman does not? Why does he have no say in the birth, but held financially responsible if she chooses to have it. About as fair as the current tax laws..