The girl I am currently dating (VERY casually) says that she was devastated by her abortion. For a year she couldn't walk into a mall and see the kids running around or she would break down. When she (some people never learn, although maybe she has now) got pregnant again, her boyfriend pressured her to have another abortion, but she refused----she said that she could never go through that again no matter what.
Apparently it wasn't sufficiently "devastating" to her that she could trouble herself to take proper precautions in the future . . .
One of the most chilling experiences I have ever had was sitting across from a friend of mine, watching sobs wrack her body as she cried for her first baby that she had aborted. She had recently had her second (living) child, and it hit her hard what she had lost with the abortion.
Of course, I also knew a woman who had had at least 3 abortions, and didn't think anything of them. She, of course, also cried every time I fed a mouse to my snake. She "liberated" a hamster I had on the menu once, and when it died several months later she called me at 2:00 a.m. to talk about it.
These two experiences dramatically affected my attitude towards abortion.