I've recently started using a slow cooker and I was thinking about recipes that could be cooked for days. My main concern is if there are any side effects for leaving food cooking for days that would make this plan unfeasible (dangerous to try). Since it is at cooking temperature, there wouldn't be any reason to worry about bacteria growing on the food. Liquid would be lost over time, which could result in burning if left unchecked, but if I add more every morning/night as needed, that too wouldn't be a problem. All I can see is that most recipes wouldn't end up tasting as well, but undesirable isn't equal to dangerous.
There just seems to be something absurd with the notion of leaving food cooking for 5 days or even 2 weeks without there being any dangers, but I'm having a hard time figuring out what they would be.