But it still sticks around. Simple adaptationism is wrong and all kinds of other processes are also at work in evolving systems, especially in multicellular animals with structured populations and piddlingly tiny population sizes compared to microbes.
Humans are FULL of weird shit that is not adaptive.
But the weird shit that harms reproductive fitness is under negative selection.
But it still sticks around. Simple adaptationism is wrong and all kinds of other processes are also at work in evolving systems, especially in multicellular animals with structured populations and piddlingly tiny population sizes compared to microbes.