Even piano lessons.
Last year I spent just about every afternoon driving little people to various lessons, games, practices and rehearsals. There were the accompanying happy experiences: pride and excitement as my daughter performed onstage for the first time; my sons becoming more flexible and strong through Kung Fu; the sense of accomplishment my oldest two kids felt after finishing well in a golf tournament.
But there was the ugliness of all the extra-curriculars too: the fact that I spent very little after-school time helping kids with homework and just being there; the nagging and quarrelling about practicing, the lack of decent dinners (I always meant to do something in the crock pot, but it just never seemed to happen).