Why are you here then?
To the OP - I know what you mean. I am noticing myself feeling less and less motivated to log on and level alts/participate in PvP activities. Personally, I think it's the whole mmo gameplay that people are getting tired of, not individual games. I am finding myself beign more excited about replaying some of the old games - X-COM series, Jagged Alliance series, some SimSity and older RPGs like BG etc. Attention span of an average gamer now is much much sorter than what it was 10-13 years ago.