Well, they did say that the ONLY way to save your game is to find a bed and sleep. It's a lot easier to find a door to pop through to save. I wouldn't mind if it worked that way, though--it would make "save and quit" a lot more convenient, and it would cut down on the "sleep scumming".
"Seriously, there's something wrong with that Vault 111 guy, he takes a nap on every dirty mattress he sees!"