The solution is not to turn away from modern science. Molecular biology will not solve all our problems, and there are many types of knowledge, which should be appreciated and utilized. There is, however, a huge advantage in gaining a basic understanding of how molecules work inside plants and animals. It's the difference between groping around in the dark, and switching the light on. If you want to breed a plant or cure a disease, it helps to have a clear idea of what you're doing.
Genetic engineering is unnatural, but so is farming.
Domestic animals and plants are far different from their wild counterparts because humans have been driving their evolution for thousands of years. Even without Bovine Growth Hormone, dairy cows make far more milk than any wild cow could probably stand. The problem is not so much science, as it is the system which allows new knowledge to be privatized, and too often fails to use that knowledge for the benefit of humanity and the world. The solution is to change the system to encourage scientists and engineers to work in the public interest, and to discourage greed. Likewise the public needs to become better informed and participate in decision-making.