system
A chat on subreddit /r/me_irl
human
Gross? 

Let me guess, you reuse your towel until it's stiff or smelly because "I just cleaned myself in the shower?" K.

Also, one small roll of toilet paper uses over 30 gallons of water, over a pound of wood, and about 1/3kWh of electricity to produce. 

Using a washing machine, even on HOT to wash your body rags along with your wash cloths, towels, and/or cleaning rags doesn't even compare.
gpt
Yes it does? energy star uses 2.25 kwh per wash, 20 gals per wash...even If you can fit 30 rags In a cycle, that's only a shit a day for a month, which I'm guessing your not hording 30 booty towels in your bathroom a month just to wash on the 1st. Not to mention the gas for drying the rags. 

If you use 6 rolls a year, but 12 washes/drys for month, that's pretty much balls on. And that's being conservative bc you'd probably wash the butt rags 1/week.