J.W.
I know people that have lost their homes paying for their children's sports at a much lower level. If I had to speculate I would think that is a bigger money drain because some of these kids suck at their chosen sport so mom and dad bear all financial responsibility.
At least when they have the talent to be an olympic hopeful sponsors come on board to help with costs.
Personally I put a lot of money into my daughter's soccer career but never more than I could afford. She was an exceptional goalie and I would not have allowed her to play at that level if she wasn't. Then again according to my kids I am a mean mom in this regard.
I never saw it as investing in her dream, she never had a illusions to being major, it was the level of competition she enjoyed. She quit her junior year because her school made her chose between sports and student government, she chose the latter. No worries, it is her life.