Here's something else we don't often like to admit; all parents have had a brief fantasy, however fleeting, of just leaving their child with someone else and running away for a while. You used to have a life of your own, after all. You could go out with your friends whenever you wanted. You got a full night's sleep. A full day's work was as tiring a thing as you ever did. Life was simpler, and it sometimes feels like it was happier, too.
The feeling doesn't last, of course. We'd never abandon our children, and they bring us more joy than they do pain or stress. When they're screaming in the middle of the shop, though, and everybody else is looking at you, you wouldn't be human if you didn't quietly wish you could make them somebody else's problem for a while.