If I loan the money to the farmers to upgrade their farms, lend the money to the populace to buy their houses, cars, gadgets and toys. They pay me interest. The smart ones will pay off the principal too, but many won't be able to. So, in the end, they will not be able to afford the payments, and I will own the land, the houses, the cars, and the gadgets. If the propositions to eliminate bankruptcy, that i have heard about in the US, go through, then I will still be owed all the money as well as owning the properties, and toys. I think that is akin to slavery, but to me, that would be profit. I could afford all the food I can eat, while those arond me strive to survive.
The profit is not for the economy, it is for the bankers - those few that own the biggest of the banks. The same ones that got all those bonuses when Obama handed out that big cheque a few years ago.