Guild Wars 2 is the only MMO that doesn't aggravate me.
- Feels like a real video game. You can dodge and stuff.
- Other players can only help. No "kill stealing"
- Other players are frictionless. They show up, do whatever, leave. No need to make a formal party
- Level cap doesn't go up. No need to chase stats forever.
You do have to buy the expansions, but the core game is free now.