some thoughts..
First of all, why should we NOT kill each other?
Because we are Gods property and only he can will our death?
Because God says so?
Because we don\'t want people to do it to us?
Because we have a natural compassion with other human beings that makes as identify each other as selves that have unbreakable rights?
because the law says so and we are obliged to follow the law as we have accepted the authority of the state?
Because we will get punished?
Just a few answers off the top of my head(none without problems of course)
Why should we then prohibit or legislate abortion? It depends on the first question and the definition when we are humans and get those rights.
Is what is potentially a human being entitled to the same right as a human? Then where do we draw the line? Is every sperm a potential child? (every sperm is sacred...

) Is it not unfair to the other sperms that only one can concieve a baby if we give them the same rights as humans? (hey we did give them a chance, didn\'t we!) Should you not perform an abortion because the baby would naturally evolve inside the mother if we did nothing? The line where a foetus can survive with medical help pushed backwards all the time. Will rich people have a different obligation because they can pay for the medical help? Is this then a similar problem as with people that has been in a coma for very long and will probably not wake up? Is the foetus suddenly in charge of the body keeping it, limiting the mothers freedom of choice? What if you say that what is good is due to how much it improves the general happiness?
okay.. some POV\'s on a difficult topic. My own opinion is that we choose by ourselves, if your religious view or other prevents you from making an abortion, you are free to do so. But you also have to respect the fact that other people may reason in another way. They may have signed the treaty that we shouldn\'t kill each other on different grounds and they may have a different opinion when a foetus becomes a human. None of the views are unproblematic. But I feel that the best way is to make people decide for themselves and not force opinions on each other in this issue.