[Florin_Andrei]

Apparently, the evolutionary impetus to withstand punches to the face is greater than the one to breathe easily at night.

Mother Nature is awful.

[andyjdavis]

Indeed. Natural selection only cares about things that interfere with the ability to live long enough to reproduce. Whether or not the organism is happy, well rested and enjoys their life isn't particularly important from an evolutionary stand point.