I have seen claims by abortion-rights advocates that abortion rights are necessary because women should have the right to decide not to reproduce. Now, I will certainly agree that women (as well as men) should have the right to decide not to reproduce. However, this does not mean that I endorse a means to escape the consequences of voluntary actions. For example, if someone buys a car, he should have the right to expect that car to work. But if he decides to use the engine for target practice and then it fails to work, he no longer has the right of expectation. I support the right of people to remain celibate. I support birth control whole-heartedly. I even support the "morning after pill" because of the possibility of rape.
Once someone has voluntarily taken a chance on an event, he no longer has the right to be excused from the event. So (with the exception of interpreting the "morning after pill" as a type of abortion) abortion is unnecessary to the right to decide not to reproduce. The particular argument (and, unfortunately, it seems to be a common one) is a complete red herring. The question most fitting is that of what rights/protections the zygot/blastocyte/embryo/fetus should have at each stage of development. Few people seem to want to address that except by decree.