FFXIV is the only MMO game that fits these following critera:
Game is still receiving updates, and isn't actively being sunset.
Game has a substantial pool of people to interact with.
Game actually has an immersive world to engage with.
Game has a substantial amount of avenues for player expression.
Game isn't gacha/P2W garbage.
Game has a reasonable amount of (non-completionist) content to interact with outside of the progression treadmill.
Not sure if trolling or being serious, I hope trolling.