I don't think it was until I came to the US until I saw the first crack stain. I mean, to walk into a toilet cubicle, and see a skid mark STARTING from the toilet seat itself left me speechless. First off all, how far back do you need to sit? Do some people lean back against the flush unit? Or are you just so FAT that your arse spreads out beyond the comode rim?
And about the "not flushing" thing - do people not flush at home? How is it that someone can take a dump, wipe their arse, get up, and then....just walk away without flushing? Can that even be possible?
It is impossible to forget that there is a greasy shit sitting in the comode, because everybody takes a look inside before flushing it away. It's extra polite to wait until flush is complete so you can decide whether a secondary flush is required.