We are basically missing the entire vertical dimension

Up a 50 ft tree is extremely high for us

We are evolved to cope with surface elevations from a tall tree to a deep free dive

The main Biosphere is 40,000 km around but only about 31km thick

That's a factor of 1,290 to 1.

Counting from the highest point of the troposphere to 2km under Challenger Deep

The moon looks close, but it's actually 30.25 Earth diameters away

For context, the International Space Station is 420 km up, or 1/2 inch off the ground