It's a funny thing. Most of us have no trouble driving a car for an hour without any further entertainment, and letting our brains wander freely in the meantime. Most of the driving we do on auto-pilot. (Spoiler: Much of the thinking, too, actually, it turns out when you look closer during meditation).
But put the same person in an empty room and the same task of letting your mind wander becomes odious.
Indeed, and maybe most would prefer to have something playing, but my point was that most wouldn't have any trouble spending an hour driving without it, even through driving is a fairly "mindless" activity.
I remember seeing an experiement where people out for a walk were asked to solve a maths puzzle. The first thing they did was stop walking while they considered it.
But put the same person in an empty room and the same task of letting your mind wander becomes odious.
Odd, no?