@Green Witch,
Yes, I agree we (in general) use WAY too much TP.
Sometimes I'll be in a stall, and hear a woman next to me take a piss. Then, I'll hear roll roll roll roll roll roll roll roll roll roll roll, and wonder what the hell she thinks she's doing, taking feet and feet of paper just to dry off about 3 drops. Everyone laughed at Cheryl Crow and her 1 sheet comment, but seriously you don't need more than a sheet, 2 at the most, for the job. As for the other function, obviously a bit more is needed, but much less than I fear many people use. I seriously think everyone should go out and buy a bottle of witch hazel, and use that to "finish up" after wiping with dry paper, if they don't have access to water to do the job.
I personally go through about 1 roll of paper towels in the kitchen a year.