>>> pocketfuls of copper?
Hmmm ... not pocketfuls - truckloads.
How many armed guards are you going to be able to hire to protect your gold ?
Far easier to steal a few ounces of gold than a few tons of copper.
And far easier for the GOVERNMENT to 'outlaw' and confiscate your gold than for them to 'outlaw' the ownership of copper. Copper would NOT be outlawed - just too damn fundamental to the functioning of ANY industrial economy. If you wanted to diversify a bit, good quality brass would make an excellent 'second choice' for a store of value.
Also, look at recent history - like the last time the dollar collapsed. Who did better - the farmers with silos full of grain or the people who had all their wealth tied up in gold. The US Gov devalued the dollar by 10:1 overnight by outlawing the personal ownership of gold during hard times. What makes you think they won't do it again?
Much tougher for guv to steal all your grain, copper, oil, gas, and so forth than to find all your gold - or just take it every time you try to use it.
From a barter standpoint, I would be in far better shape, and far safer.
There is a huge gulf of difference between 'value' and 'price'. Prices can change/collapse rapidly, value is far more stable.