So we should start legislating morality?
There is a difference between abortion and murder. Carrying a child means that this potential human is using your body, your energy, your resources in order to grow, much like a parasite would. I AM NOT IN ANY WAY SAYING BABIES ARE PARASITES, SO DO NOT START HOUNDING ON THAT... I'm making a simple comparison here. The fact of the matter is, while this embryo--fetus--infant is growing in the woman's body, it is doing so because it is unable to survive without it. If abortion is murder, miscarriage should be considered manslaughter, and so should a mother dying in child birth.
Women who have babies because they want them do not see it as a sacrifice, and although it is difficult and women have to deprive themselves of things they otherwise could have (like a rare steak, eggs over easy, lunch meat, certain types of fish, caffeine, even tea), they would do it again in a heartbeat to have their child. I have seen women who have become pregnant and refused to have an abortion because they have been told it is murder by others and are afraid of judgmental people, and who smoke, get tattoos, drink, and basically do not take care of themselves. Pregnant women with drug addictions is another concern... or women who do not have sex carefully and contract sexually transmitted infections... they pass this addiction or disease on to the infant. Every child should be a wanted child.
As for adoption/foster care... anyone would be crazy to want to subject a child to that. This is not always the most loving course a person could take. Besides that... how many children are waiting to be adopted currently, but are not desirable because they aren't infants? How much abuse goes on in foster homes and orphanages? I used to collect money, food, and clothing when I was in high school to take to two orphanages in the eastern part of my state and the conditions I saw were heart-wrenching. I would abort a baby before I would put it up for adoption.