Thats not happening to me for sure, I have so many million projects, plans, writing, and the like, re-organizations, and things I want to do more - camping-fishing-hunting, etc... I may even start going to the races again.
A friend and I had this convo last Sunday. he said he's not worried about that happening to me at all. But I know exactly what you mean though, I've also seen guys that died within a year after they retired from "their life"... the go from being a key player, - even in their own mind, and suddenly they don't even run their own home.
I almost never watch TV unless it's a movie, - preferably with no commercials.