Isn't GDP a particularly bad indicator for a society that's largely subsistence agriculture? They grow things and then eat them - does that even figure into GDP?
No human except monks would choose such a life.
I think it's possible that some of them have beautiful lives anyway, but tough, no doubt. I've been to some similar villages in Ladakh
A pool in the garden is pretty fun on summer days, I imagine! It's cool to see the Niagara Falls, or the Norwegian fjords. Or visit a friend in a foreign country!