[FranOntanaya]

> Basically, it's just way too cold or way too hot everywhere but Earth.

That's not really true. Only a thin layer of Earth's crust and atmosphere are great for life. Such Goldilocks layers aren't that uncommon if we look at all boundary climates on each body (subsurface sea boundaries, polar boundaries, higher atmosphere boundaries, etc), and not just the boundary analog to Earth's.

Even Mercury has free standing water ice. Somewhere between that ice and the scorched plains there's going to be a somewhat comfy place.