Like are Magic the gathering cards "something you need"? No. Do they bring endless joy to people who enjoy playing MTG, do they help build supportive communities, etc? Probably. Is that net good for the world? Probably.
This reminds me of the rant of a friend of mine who works on movies and TV shows. Someone was telling him the entertainment industry was useless and doesn't bring value to the world. He replied "cool so if we took away all your streaming platforms, all your music and all your books you'd be totally cool with that?" . Obviously the answer was no.