We buy organic because it's non-GMO
I think studies of studies are not research and any findings are vague at best. People don't do research anymore, they do studies of studies of studies. The farther away you get from the original data the more off-base the results. Anyone who has ever written a term paper on a scientific subject knows that.
I buy organic foods because 'USDA certified organic' means no 'genetically modified organisms' - no plant genes combined with insect genes or animal genes and sold to me without informing me. An organic tomato is a tomato not a lab experiment passed off as food. I buy organic because organic produce has less pesticides and it has to be handled and processed in specific ways to keep it's certification.
I buy organic because I saw substantive improvements in our family health after a few weeks of organic foods. So significantly fewer pesticides, and no GMO's translates into fewer illnesses and better health in our household.
To buy unadulterated food with the lowest amounts of pesticides, processing chemicals and unwanted food additives or colorings, you have to buy organic. It's a shame that we have to pay a premium for what a hundred years ago would have just been called 'food', but that seems to be the price of progress. If you don't feel you can afford organic, then at least buy fresh unprocessed produce. Buy real food, not chemical-laden lab experiments in a box or can.
Food grown in a healthy way really is healthier for you, and the planet, too. And you don't need a study of a study to confirm that. You can prove it to yourself.