Would you say the same thing about chess, which is arguably just as useless? Just wondering if it is mostly public esteem that makes you think so (chess would presumably be held in higher esteem - being a grandmaster in chess would gather more respect in the general public than being a grandmaster in CSS).

I don't mean it in a bad way, just seriously wondering what are worthwhile things to pursue. Should we discard any and all recreational activities and concentrate every waking hour on researching cancer cures? Even music and art seem very questionable, at least it is not clear why they should be more worthy than playing games.