The problem is that conventional farming *IS* just as expensive as organic...it's just that you don't see the true cost at the grocery store, you see it every April when you pay taxes. Farmers get subsidies for producing, which come from our taxes.
The reason organic (well the old way organic, not the new industrial organic) costs more is because those farmers don't qualify for, or choose not to avail themselves of those subsidies. They pass their costs to you, and you see them upfront.
I wish there was a way to pick and choose where my taxes were going to be spent, at least in part -- I would NEVER choose industrial, conventional agriculture as a spending place. I grew up in part on a farm, and my aunts/uncles had one until the day they died; my family treated their livestock in the old way -- if you meet their minimum needs and a little more, they will reward you with productive lives/products for many years. We had milk, eggs, manure, crops, and more. They didn't have a clue about 'organic' but that's how they - and we - managed our farms/gardens for the most part.
I was going to say that it didn't make a living but that's not true, our families raised dairy cattle and sold the milk to the local dairy. Cattle grazed in pasture during the summer, and ate grains/hay in the barns in the winter.