Save money to own a house, don't use credit card debt (that's how they milk the non-investors), don't fall for all the advertising telling you that you must have that 100” TV in your 8 x 12 living room (that's how they get the non-investors). Don't invest or speculate in things that you don't understand why they go up or down (stocks, commodities,bonds). Lay, low save your money. Don't be a sucker.
I wish you were right, but when they've cut the dollar's purchasing power by 25% through inflation, that 100" TV will be looking pretty sweet. Unfortunately, we may be heading into a time when only tangible goods are worth anything.
Also, I think those people who dismiss gold as a substitute currency are being a little hasty. If the dollar begins to collapse, I suspect that savvy merchants will take to accepting gold quite readily.
It won't trade at its published dollar-value -- it will be accepted at some discount rate. But it will be accepted and it will still be worth more than the dollars spent to buy it.
All that said, buying it purely as an investment right now is probably very foolish.