These days, I feel like most MMOs are just like trying to play a single player game but with other people getting in the way and/or breaking your shit while calling you an array of slurs.
Kind of like playing a regular game on extra extra difficult mode.
GW2 is the only MMO I know that doesn't have other people stealing your loot. All loot is independent for everyone (no loot sharing, bids, etc.) and you get loot from the mob just by hitting it once, doesn't matter if you last hit it or not.
Gw2 is the only MMO I've played where other people are only a positive. They can't steal your loot. They can't mess up your quests. It's a good game. No gear treadmill, too.