In the right mood, I like setting things up and tweaking them, but I don't find it "chill". If I fire up Minecraft to chill, I usually think of it almost like a model railroad or something, occasionally it literally is a virtual model railroad if I want to build nether transit or something. I also find it satisfying to fill in that last patch of a map and put a copy of it on a wall next to its mates. It is very satisfying to get that auto smelter or adjustable enchanting room just right, though, and I can easily see that stuff being a goal in its own right.
What I find brilliant about the concept of Minecraft is the way it hits a sweet spot of being just complex enough to be immersive, but abstract and simplified enough that the open world is actually open and rewards a hundred different play styles.