wouldn't it be more rational to go to bed already

I recently started to notice this very question popping up in my head when I find myself in a situation like the one you described :) I didn't consciously install this habit, it just started to manifest itself some time ago, probably several months.

But I do find myself in similar situations, usually after a good workday -- just substitute a cup of tea (or a small shot of Becherovka) for the beer, and mindless internet surfing for the wrestlers :)

(Related: Ego Depletion: Is the Active Self a Limited Resource?)