I’ve heard of men who did live in them. Just having stored stuff in there, I’d have a hard time with the heat and air.
Lived in a 42 footer for 2+ years in Iraq. Even had a roommate at the other end. Bullet-proof, with a full bathroom in the center. Pretty sweet for Camp Victory. Incoming mortars were a bit stressful when they walked the nearby LZ. And I HEARD Paki and Indian nuke tests coming up from the ground while trying to get to sleep in the hooch. Sounded like a huge sledgehammer hitting a metal floor 100’ away. Hurt my ears!