Diablo III is aging like a fine wine
Then I hit inferno, and "hard" seemed more like "cheap". I had lost that feeling of fun, where you get to the end of a hard day of real life and wade through enemies like an unstoppable force. I didn't like the feeling of hitting a brick wall and thinking I had to farm act 1 for three months before I could afford gear on the AH that would allow me to do act 2. So I stopped playing.
Some time later I logged back in one day, got all the latest patches and just like that, Blizzard returned the fun. Inferno was tamed down, however Monster Power was implemented to allow you to set the game as hard as you want. Paragon leveling made endgame play feel more worthwhile. The AH had settled down, there was great gear priced for casual games as well as gold farmers. Legendery equipment was modified to be, "legendery".
Now this game is everything I wanted it to be, I was hooked again about a month ago and still can't get enough.