Its an argument which will never be won by any side.
In my humble opinion there are plenty of reasons why you should not have an abortion and a few why you should.
Unfortunatly abortion is too often used to fix a situation caused by people having a good time but being irresponsible.
I'm all for the fun part of getting pregnant, but just apply a bit of sense and a lot of the worlds abortions won't be nessesary.