I don't like reading about how houses and animals in a certain village look, then being told, "And so Reltiolhnand threw mud at his friend DIelslseD's face as they had not a care in the world . . " It's not personal. I like the surroundings to interact with the main characters, see what it does and might make the observer think of.
To create a world truly alive, treat it as alive. Abnormally, E. Quinn B.