I am not "pro-abortion," I am "pro-choice." If there were never another abortion performed on the planet because women had no further need for the procedure, it would be fine with me and every other pro choice person I know. We have no attachment to abortion. We don't hold it as a sacrament. But in this world, the real world, where real women are often faced with unplanned/unwanted or harmful pregnancies, the option must exist. When it is criminalized, women suffer and die.
What makes me angry, almost rageful, is the notion that anyone else, particularly some man, should dictate to me that I must be forced to bear a child against my will, that THEY have the right to tell me I must use my body in any particular way or that they have the right to intrude in MY private decisions about something that is so very personal. They would tell me that a fertilized egg or cytoblast or newly implanted embryo have more rights than I do, a grown sentient woman. I also hate the patronizing attitude as though women don't know what they are doing or the gravity of the decision. What makes me also very angry is that many of the same people who want to control women in this way and force childbirth on unwilling women in the name of protecting "babies" are the same folks who don't want to pay taxes to help other people with medical care, education, etc. So, all the instincts to protect life seem to end once the baby is born. Some of these same people support war, support the death penalty, want to eliminate foreign aid to starving children, don't want to spend any money so that poor women have access to birth control, applaud assassination of abortion doctors, harrass women going to clinics, have a punitive attitude towards women who have been brutalized by abortionists where the procedure is illegal. These attitudes which often, not always, but often, go hand in hand with the "pro life" movement have nothing to do with compassion and reverence for life but with imposing their belief systems on other people and in particular with controlling and punishing women.
BTW, a fetus is not a baby no matter how many times you say that. That is a belief, not a fact.