FOOD

So these days i am reading and researching nutrition . I only buy organic and it's expensive as hell but to me it's worth it ! What i wanna know is , why is it ok ? Why is ok for food companies to produce and sell crap ( Food that contains GMOs ) ? Why would they do that to people and why is it ok ? Furthermore anytime laws or bills are on the table to stop this or at least have these foods labeled the Food companies fight till the end in order to continue . Why ? I really want to know ! Food is supposed to sustain us not kill us