Why do we wash bath towels? Aren't we clean when we use them?

moisture. bacteria breeding grounds. fungus. mold. mildew.
Clean that shit, man! It ain't THAT much trouble!

There's no point in drying ourselves with something dirty after we just got clean..

The moisture in towels become a breeding ground for bacteria.

Because if you don't that is nasty..keep things clean dude

exfoliation. :P