Pigs eat grass if they are very hungry, but they can't use it as a regular source of food.
Almost all wars, perhaps all, are trade wars connected with some material interest. They are always disguised as sacred wars, made in the name of God, or civilization or progress. But all of them, or almost all of the wars, have been trade wars.
I don't believe in organized religion - I dealt with them hand in hand, and a whole bunch of Catholic priests tried to molest me. Telling me I was gay and I should go home with them and stuff.