They made the choice when they decided to have sex. Assuming they are aware that sex leads to impregnation. So that excludes retards and what-not, I suppose.
So many people think of abortion as an "easy way out" for the kids who get wasted and suddenly wake up with their world a bit different; or the trashy whores who decide to sleep with every guy on the block. It's not. You're right, it's anyone who has sex: of age, underage, educated, uneducated, rich, poor...
I assure you, there are many people in the world who have sex without the intention or desire to procreate. Yes, there are married couples that aren't dying for another child, too.
Perhaps it's the sinful atheist in me, but I find it rather dull and boring that a woman who does not wish to have children (or any more children) should be expected to commit her life to celibacy.
How is it foolish if it works? Our control over our natural instincts is the only thing that separates us from animals. So how is it any less foolish to give in and act as my dog does towards my leg.
We are not free from instinct. Have you ever gone for a test that you were stressing over; one where you thought you knew the answers, and suddenly, when it was time to take the test - you blanked? It's a physical response, ages old: "fight or flight". When you're nervous and afraid, your body creates adrenaline, your digestion slows, your pupils dilate, and blood rushes away from your brain, and into your muscles.
It's a horribly stupid response, in light of the situation. It prepares you to run, not to think clearly. But, that's the point: even knowing that it's the wrong reaction, we can't control it.
I'm not saying the situations are identical, for clearly, the forebrain usually has a say in whether or not one decides to have sex. But the decision is influenced, too, by many other things: among them, the primitive need to procreate that, at one point, probably kept our species alive. (Much like our instinct to run from what we fear has kept us alive, regardless of how little sense it makes at times.)
People are better apt to accept caution than to "just say no".
WTF? No.
Contraceptive prevents a potential life.
Abortion terminates an existing one.
And yet, contraception was once considered as immoral as abortion is now.