Everyone runs into MMO lulls here and there, when old games fall out of favour and new ones are still in development. A large number of players continue with their de facto game regardless of their obvious lack of interest, whether this is by habit, lack of self awareness, or peer factors.
Take it easy with your MMOs, re-evaluate once in a while the reason why you're still playing. Often we get into such schedule and repetition that we fail to notice if we are even having FUN when we log in. If a game stops being fun, leave. The unsubscribe button doesn't bite your head off, regardless of what the companies tell you.