I'm not entirely sure what farm subsidies actually do. But if family farms are being shut down because of huge corporate farms I am totally against that.
Farm subsidies do not solely consist of paying farms to grow certain crops, or to sell at lower prices. Some farms are paid millions to NOT farm at all. Basically it's an attempt at controlling the price of food.
Thats an FDR program. FDR ordered millions upon millions of tons of food burned when he came to office in order to raise prices of corn/wheat and the like. How do I know this? Well I have family members whos parents had farms during the depression and they were ordered by the federal government to burn their crops upon harvest.