Yeah, but what if a woman does any of those options, and gets raped? Are you implying that female rape victims were being irresponsible by not "Avoiding rape"? Not necessarily of the "She was wearin' a skirt!" variety, but pretty close.

And what if birth control doesn't work?

Furthermore, it may be that abortion seems to be the only option from your perspective because in any discussion of abortion, a pro-choicer will declare that women have the right to have an abortion. Just because one has the RIGHT to have one, that also includes the right to choose not to have an abortion. There really are only two options. Allow women to have abortions, or restrict their ability to choose.