But it is difficult to acquire here on earth.
As uranium and thorium naturally decay underground, they produce some helium as well. That’s why you can literally make a helium mine. On earth it’s also a finite resource, because once released into the atmosphere, it will eventually escape the atmosphere and end up in space.
It’s as if the human mind was built to recognize patterns. There’s probably some biochemical reward mechanism associated with finding perceived patterns and structures, which would explain why that feels pleasant.