Are you talking about recreation / rest when you refer to turning your brain off?

I experience some of this as well. Perhaps in some measure it is the result of a lowered time preference.

Being in the creative arts, I love cinema and the craft of filmmaking, but there are so few shows or movies my wife and I even consider worth spending a few hours on anymore. Part of it is our season of life, part of it is the degeneracy of so much legacy content, and part of it is that I would rather be creating than consuming, and find rest elsewhere.