dance classes are the suck...its like a right of passage for most little girls. 90% of the kids don't want to be there and is only there b/c mom wants them to do something or wants to brag about 'how good (insert name here) is' when they couldn't dance their way out of a paper bag.
And this is coming from someone who has spent more time at dance-related crap then anyone here, my wife is a dancer and dance teacher, since well before we were dating 20+ years ago, and both my kids are enrolled in dance.
Yes, as someone said, there is great exercise benefit from it...if you take it seriously. But that maybe 10-15% of the kids. I #### you not, there is a kid in my daughters classes who after class is over, goes into the lobby and her parents are there with 3-4 boxes of Poppa John's pizza from next door to take home after class.
My daughter enjoys it and takes pride in it, so its something for her to do after school. She also figure skates and I don't have any long term aspirations for her other there either other then self esteem and enjoying doing something unique.
My 7 year old son also dances, and the funny thing is for him, I see the long term benefit of that paying off when his 18+ and at the club in the middle of all the girls dancing while the other 'dudes' are too cool and backed up against the wall.