It is very easy to do parasite maintenance on our skin with less hair. Parasites are a bigger problem than what we usually hear about. Ive seen animals with hundreds of ticks, with many being the size of grapes. Parasites are even more dangerous to social animal cultures, because they congregate in dense population which allows the parasites to spread more easily.
Being able to to clean our skin easily is somewhat of a super power.
Also, everything the others said about sweat.
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