When your best friend is pregnant and you realize you won't have kids at the same time as planned. In fact, at your rate hers will babysit yours. - I don't compete with my friends. I think this idea is really cool if I should have kids.
A pet peeve of mine. the complaints of a run ragged stay at home mom. try being a single mother with a full time job. Or just a mother with a full time job. I've done both and can tell you which is more difficult.