It finds itself in use by most Americans and various others internationally.
Much of the time it's importance is emphasized when we enter a public restroom and realize there is none. Now, many more find themselves using toilet paper along with a bidet.
Before the advent of toilet paper, there were leaves and "thes tersorium" Which is a type of sponge which would be rinsed it off and left for the next person.
Aaaaaaaaargh !
It's really a simple invention which has found it's niche in the area of health and hygiene.