I respect Obama's statement that the Palins' family troubles are not a matter for the campaigns, but this is certainly a public discussion. Cast in relief is the wisdom and effectiveness of abstinence-only education.
Abstinence-only is a high stakes game. If you can't stick to that tenet, and clearly many/most can't, there is no backstop to pregnancy. When I was taught sex ed, we were repeatedly told that the only way to have safe sex was not to have sex. Abstinence-only advocates think that message is diluted by the rest of the education, which dispells the very real misconceptions teens have about conception and coitus and explains what the risks are and how to avoid them.
I don't know if education about condoms or other contraceptives would have helped in this situation, but wouldn't you have wanted this young woman to have the benefit of that education? (Actually, for all I know, she did have the benefit of it. I don't know what curiculum her school teaches).
And as an aside, I see hypocrisy in the right wing's embrace of Palin through this episode. This is precisely the situation they point to as evidence that abstinence education is necessary. If it were Barack Obama's daughter, they would decry it as the result of a morally bankrupt educational system. And if she decided to keep it, they'd ignore the pro-life angle and talk about the burden teen mothers place on our economy every year. Sure, perhaps McCain wouldn't, but the swift-boaters certainly would. What makes this any different? Palin can't keep her own house in order, why should we give her the spare keys to the White House?