Its a bit of a mixed bag... I mean honestly i think most sports are a bit of a waste of ones time, persuing whats fun at the expense of anything that adds value to the world.
That said there is no doubt its a skill to play a sport or tetris and takes many hours of time invested to get there. Should we respect hard earned skill that is fun and does nothing to improve the world? Eh, I dunno.
Like I think we should recognize the skill, but I think its also ok to recognize its a selfish endeavor that is, in the end, a waste of energy that could have been invested much more wisely.
Then again its a step up from just watching TV all day or something I guess.