WoW is embarrassingly casual now, especially in terms of how fast the leveling has gotten (plus the fact that you can buy the 100 first levels). But I never raided much (only some of the old era content), and was always more into the chill exploration/question aspects of the game.
It has improved though, it's a very good game (loved Legion), and apparently the end game raid is still good too. So it fits for all. Easy to get a decent iLvl for mid-level raid and work your way up as usual. But it's pretty damn boring to play alone. I tried it, didn't really last long because my guild suddenly got all mad at each other for dumb shit so I left and didn't bother trying to find a new. But anyway, leveling is enjoyable and there are lotsa things to do. I still wanna go back but I don't really have anyone to play with.