Thanks to those who answered me, thanks to those who have been sarcastic, it makes me realize how many less intelligent people are after me and makes me feel better
I'm guessing you were referring to me with that last comment. I would like to point out I was in no way being sarcastic and I don't appreciate the hostile response and name calling to a genuine answer.
Objectively speaking, the game would be incredibly easy if you could sleep anywhere. It was discussed early on having a bed roll that could be used anywhere. The game developer and many others that played the game decided it wasn't a good idea as it would have removed any challenge or danger from the game.
If you do find the game too difficult, there is always casual mode which allows a small amount of passive healing, as well as the ability to save in dungeons.