Of course there always the people who rushed to 50 and now feel burned out and tired of the same oll' thing.
Personally I think they now have an advantage due to the recent SP changes. Its now just about impossible to level up post 30, and I would imaging the upper 40's would drive people crazy. Im sure all those people who got 50 before the patch are laughing at us now =P
PS: Im a 30 GLA and i refuse to level it up anymore until SP is fixed, its just way to boring to grind for that long as is <_<