My friend claims that it's normal to wash your bath towel after each use. How often do you wash your towel?

At least every three weeks.My friend claims that it's normal to wash your bath towel after each use. How often do you wash your towel?
Well I wash my bath towels after one use because when you think about it, its pretty disgusting to dry your butt with your towel one night and then dry your face with the same towel the next night without it being washed. BLECH!My friend claims that it's normal to wash your bath towel after each use. How often do you wash your towel?
i dont think thats normal? i do every 2 weeks