[curiosity]

You know you can just buy a dutch oven and use it in your oven as a slow cooker.

I have a dutch oven too, but leaving my stove or oven on all day when I'm not home is a fire hazard. On the other hand, leaving the slow cooker on low all day is perfectly safe.

[equalitybeforethelaw]

“but leaving my stove or oven on all day when I’m not home is a fire hazard”

I assume you have an electric stove. So when was the last time your house caught on fire when running your oven at 180 degrees F? Most home fires are caused by electrical shorts and gas leaks not ovens.