Rocky,
If you are having one for emergencies and you don’t know how to use it then how bloody good is it?
Sadly a lot of people get one because of the “what if my car broke down in the middle of nowhere” thing.
My MIL got one for the same reason 4 years ago. She used it a few things in the first few weeks and it has been sitting on the kitchen bench since.
Unless it cooks me bacon and eggs, I ain’t getting one.