No dumbars. Keeping you busy longer.
I think most people come to a point where they find the reloading a nice distraction from life.
It's kind of like wittling a stick. You need to focus on it, or risk having to have your finger reattached.
Not to be that guy... but...
My wife was reading "Men are from Mars, Women are from Venus" to me the other day, and it was talking about men and their "caves." Like he said, men like having something to "do," or some problem to solve. Reloading fits that bill well.