Characters engage the everyday. It may seem sometimes like they’re misplaced in their surroundings, but actually they are constantly calling attention to it with the senses: their speech, their appearance, sometimes even their names.
Very often these elements combine to produce a resonance that is so compelling, it makes a description in words completely inadequate.
You’ve got to be there. You’ve got to meet them. You’re invited to watch and listen and when you do that in the company of a real character, time slows down. And everyone wants some more of that.