Having travelled relatively extensively, I have seen my fair share of bathrooms.
You know what is great about living in the U.S.? We get to flush our toilet paper down the toilet.
That's right. In many countries you have to throw away your used toilet paper in a waste basket in the stall. If you thought men's restrooms smelled bad, you can only imagine what a trash can full of other peoples used t.p. smells like.