How's that Gold Tasting?

For those of you who are stockpiling on buying Gold, one would have to assume that things will get bad enough that this medium will be the instrument of trade for food. If so, again one would have to ask, if things are so bad that currency is no longer viable, that Gold is the bartering tool, than one would have to deduct the following; If you have a Gold piece worth say $500.00, your family is starving with no food and little water, you come to my place begging to trade some gold for a sack of flour. How much do you think that $500.00 Gold piece is worth that you are holding???
Assuming that I'm going to even trade you, it is worth one of two values... It's worth a bag of flower, or it's worth whatever I want it to be worth...
I would Implore you to stock up on your food supplies... Keep plenty of "Cash" on hand... Stock your water, food storage, basic essentials... Learn to fish, farm and fire a weapon...
God Bless you...