This is exactly why I've started making the swap. I love how easy to use Jumpstarts are, but the chance that they MIGHT fail still worries me when I have a pet sitting on the heat source it's controlling. You trust something until it gives you a reason not to, and while that's cool with say a car that might break down, a car breaking down won't burn me to death. (Hopefully)
I hope that made a little sense lol