What Bit said is exactly why I used to trade commodities. Back in '76 I saw my grandfather's stock go from $140/share to zero in two weeks (much longer story). Commodities are always worth something and there are usually safeguards in place to prevent huge swings such as what took place when the Hunt brothers tried to corner the silver market (my Uncle lost $330k thanks to them - real money, not "on paper"). If you look at all the most traded commodities, you'll see that all of them go up and down all over the place over time with two exceptions. The first is Silver thanks to the Hunt brothers, but if you take out that one huge spike then it looks like the rest. The second is the S&P 500 which, of course, is tied to stocks and that is an artificial market based on human fear and greed. I've got a 200 year chart that covers two pages of one of my trading books and it literally starts at the bottom left corner of one page and goes in a fairly straight line to the top right corner of the next page. The "crashes" look like tiny little corrections at this level.
In 1999, I had 89 contracts of Gold worth several million dollars expecting a big jump up (which happened). Unfortunately, I set my goal about six points too high and lost about $300k in profits (including losing over $170k in
one day!), but still came out very nicely overall. Trading is certainly NOT something for just anyone to try. It can eat up the emotional types. That said, I don't see any good reason to
own the actual commodity when I can control it for far less.