I agree that an unhealthy sports obsession is no good, but I think that the positive lessons (Sportsmanship, Teamwork, Physical fitness, Discipline) outweigh the negatives. As far as causing cultural demise, pro sports come in way behind the likes of the Kardasians, Lindsay Lohans, Paris Hilton's, honeybobo's and about a million other dummy's that somehow pollute every media form with their inconsequential nonsense.