I see a lot of people here like to day trade index futures. Is not there a lot more profit potential in metals or grains or etc.? For example, if I understand it right a mini corn contract is valued at 1,000 lbs so if you get into a position one day and it closes 10 dollars in your favor you make 10 grand after adjustment right? Sugar is even better at 112,000 lbs. So why don't people hold positions instead of day trading them?