How are there people out there who have had children (and, presumably, cleaned up all sorts of disgusting children-related messes) 

…and yet still are too squeamish to use a porta-potty 

or even bring themselves to go in and flush the toilet in a stall in a public bathroom that still has anything from the last person in it

what the hell is the thought process here. 

Do they all think their own children are somehow uniquely clean amidst the unwashed masses of the rest of humanity 

“well I know where my kids have been” …yes? you know they’ve been at school? …crammed together with hundreds of other children who have equally limited control over their coughs, drool, snot, and other body functions…. many of whom are not vaccinated against anything… many of whose parents can’t take any more days off work this year, and therefore have no options for childcare if the kids are sick, other than just sending their sick little asses to school to infect yours?

and you deal with whatever your kids bring home from THAT…. and yet you can’t handle a public bathroom, unless every molecule of evidence that anyone else ever used it has been erased? 

what world do parents think they live in