I think its a symptom of games companies (especially EA) playing it safe and releasing virtually the same game over and over again just with slightly different features etc.
These days indie games are the only areas where there is true originality and interest - otherwise its a choice of halo 15 or Assassins Creed 27
That must be it then. 3 out of 4 of my new games are sequels including Assassins Creed 3 and Resident Evil 6. Maybe im bored of these franchises.