Of all the coming sacrifices that you fail to consider when you have kids (so many!), the most insidious is how all the vacation time you accumulate will be divided in equal measure between staying home with them when they are sick and taking them places when they are on school vacation. This is not to say that raising kids isn’t wonderful and enriching and etc. etc., but for much of their lives, they are whiny travelers who insist on doing boring stuff. Important pleasures that they generally fail to appreciate include ocean sunsets, after-rain forest smell, and weekends walking around Philadelphia and getting drunk. Also, entertaining them costs money.