Abortion treats pregnancy as if it were a disease. The premise of male domination throughout the millennia has been that men are biologically superior to women. Abortion defenders answer that while this may be true, we now have a technological fix for this. True advocates of equality would reject the premise. Women were never biologically inferior to men, and don't require surgery to become equal.
Abortion serves as a weapon in the arsenal of men who wish to dominate women.
Such men see it as making women sexually available to them, to be vacuumed out and re-used. One state legislator in New York even said that he favored abortion legalization because otherwise many of his friends would be stuck with child support payments. Employers can be offended that a woman asks for accommodation of her child-rearing tasks. Pregnant women are put at a disadvantage when trying to get support that would be expected if the baby were already born. In extreme cases, rapists and especially incest perpetrators have used abortion clinics to cover up their crimes.