It all depends upon how you look at it. I've got a daughter in gymnastics who is in an elite level training program. The per month costs equals two car payments (and not Yugos).
I've got another daughter who is mediocre at rec-level soccer. I wouldn't think of depriving her of her fun anymore than I would my son from wrestling or my other daughter from gymnastics.
Bottom line: when we signed up for the egg/sperm thing, we also signed up for sacrifices. Let our kids chase their dreams, however big or small. If I have to eat baloney in my lunch, I'll get by with a single slice to make my kids happy.