I think if the grid went off for an extended period of time, food would be the least of your concerns. Everyone else is hungry too, when people get low on resources, they get violent.
Me personally? Yes, I know how to hunt, trap, and clean an animal as well as how to start a fire with a friction drill. I'm also not picky and know that in a pinch, dog food is eatable, certain plants that live where I do can be eaten. Squirrels and geese are common around here. I also know how to fish.
In the absolute worst case: an true apocalypse, the society has broken down to it's most animal level, and my family is starving, I'd like to think that I wouldn't, but in the moment I think I'd make the decision to hunt down another human for their supplies (and they themselves are eatable.)