Yeah, I hear that it is. The main reason I left was because of the difficulty. I started playing it in 2005, and since then I felt the decrease in difficulty. I wasn't the type of person to complain on the forums about it, I just knew that the game wasn't going in the direction I was interested in.
Another reason was the community. Everyone was always talking about how epic they were, but since everyone had epics, a lot of people seemed to be this way. I dunno, I just played it for so long that I always feel the urge during this time to at least see where the game is. Perhaps I was just on the wrong server, haha.
"Crap crap crap crap crap JUMP wait wait wait JUMP run run crap crap crap run CRAP DODGE THE FIREBALL crap crap crap haha take that you stupid Koopa King woo this is awesome I get to meet the Princess HEY WHAT THE HELL."