I've seen these before - someone leaves it all for the simple life. This is the first time I've seen the added benefit of being able to spend a lot more time with family. To me, that's one of the most compelling reasons to do something like this.
I have met a number of people over the years who have had similar transformations. They went from doing what they believed the should be doing, to something they believed in/wanted to be doing. The transformation is huge.
Life is way to short.
Personally I think the change of pace is what some people need. While routine is comforting, it's also a trap and can be soul sucking.