I have met dozens of women that have had or are planning an abortion, and I will say that each had a unique story and reason for their decision. Even during medical school, I realized that there cannot be one rule that will cover all examples. For this alone, I support a mandate for the government to stay out of the decision.
10 years ago, I was the suspected father of a pregnancy. The mother chose to abort the fetus. Although, my position was that of support if she chose to continue to pregnancy and expressed my position against termination, I felt it was unethical for me to place additional pressure upon her. I felt that was the extent of my control of another human being, in this matter.
I do regret her decision and consider the possible events should they have been different (a futile and foolish exercise in possiblities).