[Arnfinn Madsen]

I think much of the reason is that your poker skill is a combination of talent and aquired knowledge, and at some point you get to a limit where your relative lack of talent (compared to others at that level) makes the process of aquiring knowledge to compensate for this too big of a hazzle. We are not all made to play in the big game.

I personally push and push to try to get a winner at higher and higher limits, but it is mostly to keep my job challenging/motivating (online pro) and to aquire a "knowledge buffer" since I believe the games will get drier.