I know there are folks with big snakes that like to work without hides so the snakes don't get insecure and use the hide as a security blanket, feeling a large constrictor being insecure is a BAD BAD thing.
There are some on the Indigo Forum that advocate (stressfull as it seems) putting a new snake in high traffic areas of the house to get them accustomed to lots of movement in and around them with the benefit of becoming a compliant easily handled animal. You see that in petshops sometimes where an ordinarily nervous species gets "adjusted" to whatever happens around it.
I have noticed over the years that some of my animals have developed attitudes when given lots of hides and larger cages when before they were docile animals.
Of course we all realize some animals HAVE to have hides to feel secure enough to eat.
I have often wondered if its good for the animal I keep in a large hide rich cage when it goes beserk when I go in to clean and change water. seems very stressful as opposed to the ones that you can just pick up set down somewhere safe and clean and they stay relatively put till done, not rattling,thrashing and hissing. sometimes easier to enjoy the animal.
Good and interesting topic. 