@Christine455 I doubt that any hosts enjoy having to give bad ratings. I've been lucky in that I've always gotten guests who didn't deserve any bad ratings. One who was a sweet guest but left her room a disaster zone- she got 5*s across the board and a 3* for cleanliness. I was sorry to have to do it, but want to be fair to other hosts to let them know.
I find it helpful to think of ratings and reviews as neither good nor bad, but honest. And keep in mind that what I'm reviewing is their suitability as a guest, I'm not reviewing them as a person. Some people may be perfectly nice to hang out with or work alongside in a job, but clueless as to how to be a good guest.