I still subscribe to there being benefit to playing multiple sports, but that is soooo hard to do in the current landscape of youth sports. My 9 year old son really enjoys baseball. He has rec baseball in the summer, travel baseball year round, individual hitting sessions, individual pitching sessions, other camps, etc. The problem is, all those activities don't leave room for much else. He plays rec soccer in the fall and has occasionally played indoor in the winter when the schedule allows, but there isn't time to dedicate much to soccer outside of games and practices. He has expressed interest in playing basketball, but I just don't know how to fit that in. None of the sports ever really end and everything overlaps/conflicts with the others. You can play everything casually or you can play one sport seriously, but it's hard to find any balance in between.