I've been going through intermittent burnout in City of Heroes for a couple months now, but since the expansion (Going Rogue) has been announced, I hardly ever log in. My thoughts are something along the lines of "I don't want to play the boring old stuff. I want to play the shiny new stuff. But the shiny new stuff isn't here yet. I don't want to play the old stuff, so I don't feel like playing the game".

Curiously, I keep playing Guild Wars even though I'd much rather be playing Guild Wars 2. Maybe it's the complete lack of information on the new game that makes me not miss it that much.