I dislike abortion, but still think that there are limits to our right to impose a world view on people who don't share it. I find abortion easier to accept in those very few occasions (****, risk for the mother's health, really serious malformations on the fetus) where I myself have doubts over what decision I would take if it were to happen to myself, and therefore completely refrain from judging the mother, whatever she chooses. In other less extreme situations, I definitely don't like it, but as I said before, society has to be ruled by laws that allow the coexistance of people with different mentalities, when ruling over shady areas (like when exactly does an embryo become a being with rights that must be upheld by society) around which a clear-cut stance that is accepted by all is imposible to be reached.
Abortion is always sad and always implies a failure. However, maximalist options, on both sides of the issue, would amount to tyranny: I don't think any sane person would defend that a mother has absolute, unbridled rights over the life of the foetus right up to the moment of birth; likewise, most sane persons would agree that forcing a mother to carry on with her recent pregnancy against her will does entail some innaceptable interference with such a private aspect of her life as to constitute a tyrannical invasion on her privacy. A consensus has to be reached somewhere between both extremes.