The prospect of not having an adequate supply of food and/or medical supplies and not being able to buy them when you need them is not a risk I'm willing to take.
I haven't gone crazy, but I have bought tinned food to last a couple of weeks, similar amount of toilet roll and have a first-aid kit to cope with sprains, wounds, fever etc., in the event that hospitals can't help or are a no go and/or ambulances are not available.
I don't know if you have anyone that depends on your care, Shady, but once it's too late, it's too late. Maybe, at least, make sure you've got adequate medical supplies so that a realtively minor medical situation doesn't turn into somethig more serious because of you can't treat it.