I’m not afraid of you winning a lot of trades—I’m afraid you’ll get emotional and lose one. If you get emotional and lose one trade, you might only lose 100 of “oil,” but your emotional trading could cause you to lose your entire account balance. Because you’ve lost that 100 “oil,” you want to earn it back, so you take a larger position, trade more frequently. Of course, there’s still a chance that you’ll win back your unrealized loss—or even make some profit—but this whole model is a dead end. It can only lead to zeroing out. In the end, it will make you lose more and more. By the end, you won’t have any capital left to go all-in—you’ll lose your money.