Maybe the streaks problem is also related to amount of fiber in the diet? Or improper wiping? I have to admit I generally don't have a problem with this, but compared to things I've read on the internet I think I'm a champion pooper. TMI P.S. Klein, don't forget that (admittedly hopefully more rarely) the toilet is also the designated receptacle for vomit. Yummmm! (Caught my cat drinking out of the dirty toilet this weekend. He's a potty-mouth.)
I tend to worry too much about these things which is why I have to reassure myself with these thoughts. Wrong comment. Whatever. I'm sure their intentions are good. And that they care a lot. And good for them for finding a way to make money by writing about toilets. Clearly I need to switch up my subject matter. I bet I could write really grammatically correct trash novels.