If my choices were between withdrawal and abstinence, I'd choose abstinence. It is just completely against nature to pull out at the last second. It would be such a letdown after getting all worked up like that. Right before you ejaculate is the time when every force of nature and evolution is pushing you to go as deep and as hard as you can, and it really feels like a crime against nature to pull back and out. Also, the method doesn't work (I don't have first-hand knowledge of its failure rate, but science shows that there is still a chance that pregnancy will occur). Also worse than useless against STDs.
