I imagine you're right. And quite likely part of the problem is that, paradoxically, the ability to solve problems leads to increased stress. If you can't do anything about your troubles, then you're free not to worry about them.

This is an issue that I don't see being addressed at all in the U.S. On the contrary, we see articles (rather often on HN) on how to squeeze more productivity out of those silly little bits of free time in our days.