Since most of the pro-abortion arguments that I have heard make abortion an issue about choice and equality, my argument is usually this: If a man gets a woman pregnant and she doesn't want the baby, she can get an abortion and the father has no choice in the matter and he loses his child. If he gets a woman pregnant and she does want the baby but he doesn't, then again, he has no choice or equity in the decision and he is writing checks for the next 18 to 21 years.
There is no equity of choice when it comes to abortion and the murder of innocent life.