I still play guild wars 2. It's the only MMO that doesn't piss me off. No subscription fee. Never raised the level cap. Only added a new tier of gear once close to launch and said that's it. Plays like a real video game.

Because the level cap and gear cap doesn't change, you can take a break and come back just fine. My characters I made years ago are just as mechanically viable as anyone else. (Knowing how to play them is a separate question. I'm pretty bad at thief, but some people are little immortal jerks with it)

It also feels more like a real video game than some MMOs. You can dodge attacks. Like there's a dodge button that moves you and gives you iframes. There's a lot less of the old timey "your character moved away on the screen so the monster did its attack animation way over there, but you still get hit".

They also solved a lot of the anti social problems of old MMOs. You don't need to form a formal group for most content. There's no kill stealing. You just go into the world and do stuff.

There's no mandatory quest chains. There's the main story you can follow, but there's very little MMO filler. There are "hearts" you can do that are kind of MMO busywork, but you can also just not do them.

I know the game is old but it's still very good. I haven't been able to get a lot of friends to play it. I think they think it's like a shitty MMO where you just grind for gear to grind for more gear, and level up so you can level up and grind for more gear. It's not.