Same here. I lived in some of the world's largest cities most of my life, and loved the "big city" atmosphere. But in my late 40s it changed and started to crave being out in the countryside, away from people, noise, etc. I now live on the outskirts of a medium size city (in 5 minutes I'm out among orchards and vineyards), but would prefer to be even further out, have an orchard or small farm (though I have no illusions that I could make a living from that)
Generalizing, I'd say younger people (18-35) are more default-comfortable in novel situations. As we age, people's tolerance for that seems to decrease.
And, on the whole, I'd say that rural life provides less novelty than city life. Or at least novelty within tighter bounds.
I still crave novelty, in that I'm always wanting to discover new things, go new places. But I don't feel the need to be so "busy" as is common in a big city.
