thats true for anything. that includes currencies, what you get paid, the value of a hockey card, the value of a car, the value of a banana, etc. sure, if society doesn't want to pay you anything for 'it', you can do with it what you want, like eat the banana (before it becomes worthless to anyone).
I am not a gold bug, i personally dont think its a great investment. its not a hedge against a declining market, and its difficult to own in large quantities. however; statements like 'its only valued because people give it value' are not very informative. everything is valued that way. everything.
also, the industrial value of gold is not laughable. its negligible because we have plenty of gold to meet industrial needs. but its not laughable, its in your smart phone, its in your desktop / laptop, etc.