Another way to look at the abortion issue is, sex gives women an advantage relative to men. Men desire sex more often than do women, because the male body can be fertile nearly everyday; solar cycle. This daily fertility will impact the male brain and induce impulse for sexual behavior. Women are on a monthly cycle; lunar cycle, and therefore cycle between desire and not desire. Men and women can overlap at times, and then they can diverge other times. The net affect is, women can learn to use sex as a tool for advantages based on the clarity of her down times. Abortion is a way to maintain this edge. Once a woman is pregnant or her body is stretched out by birth, she can't always get the same leverage over men.