That's true enough as sometimes i get a notion for something on a fretless or if i need to work something out and just need to spend a few minutes with a bass. It would be more a nuisance for me to open up cases or where you have several cases find the one you're looking for before opening.
I guess its each to their own and what you're used too If the room was bigger i might have gone down the route of floor stands. When i just had the 2 or 3 basses i used floor stands but they kept getting in the way or i kept knocking basses together if sitting down as room is a small bass cave