You know, you can't breathe underwater by just using your lungs, so anyone who tries would surely be disappointed. But anywhere else on the whole entire planet that is above water would certainly give you satisfaction.
Although, don't go above about 30,000 feet as the air is really thin and hard to breathe, so you might find disappointment there too.
In either environments, folk who go there may find a lack of oxygen to the brain and suffer from hallucinations before they demise from a lack of the stuff they need to survive. Most of us need fresh air to satisfy our needs because being holed up in a dungeon of our own construction where everything is sparse and orderly and has no room for error is just a nightmare...it is too ideal for a matter of perfection where it doesn't compare to anything else...
...well, unless anything else is the whole world outside confinement.
I don't accept confinement...I live outside the box.