Disdain for solo oriented / activities / play on the forums

I’m not opposed to solo play. I play solo myself BUT I also do group content.

If anything, the game tilts heavily to players who want to mostly ignore other players.

There is very little need for real social interaction and in many places cooperation, to play the game.

My question to players not interested in the social dymanics of playing the game with other players is why not just play a single player game? There are tons of them out there.