I left around the release of Legions of Almire because I was getting really tired of grinding. it wasn't really fun to play levels because they were all the same. I thought LoA was different and cool but it was too hard for me. If something is too hard for you, you normally can't fully enjoy it. I left for a little while so they could add new content or something and so I could take a break so I won't feel like its so grindy