The 'organic' debate in the United States is such a clusterfuck, but I think it is generally a good idea.
I started to buy more organic since meeting my wife, and she is quite concerned with the quality of our food, which she is physically sensitive to, as well. I am well aware it can be used as a marketing ploy, but I feel like the quality of the food we tend to get organic is generally better for me, even if it doesn't stay fresh as long and less consistent taste (sometimes amazing, sometimes bland).
You see, I grew up poor, so I ate a lot of processed foods. But at the same time, my parents had a garden, grew a lot of vegetables, canned most of it for the rest of the year. They despised the taste of many grocery store vegetables, as they are often chemically sprayed or otherwise altered so they will be fresh longer (look ripe before they actually are ripe is what it amounts to). I know what a good fresh tomato tastes like and most of the time, the ones I get anywhere outside of a farmer's market are a pale shadow. some foods are worse than others, but I think we should be concerned about the food we are consuming. I AM concerned about the pesticides (poisons) that are put on my fruits and vegetables, the bleach used to clean chickens and our meat, the health of the animals we raise to eat, the preservatives we use to keep food from spoiling, etc.
Other related issues for the 'organic' debate that all come into play: pesticide use and runoff, fertilizer use and runoff, susceptibility of farmable plants to disease (the number of species of farmed plants has dropped 5 fold or better in the past 100 years and that means it is more likely a disease will hurt our food supply), the control of our food supply by big corporations (see Monsanto), the waste of transporting foods across the country when you could buy regionally, the potential for unintended consequences by direct genetic modifications (breeding isn't the same thing - that actually requires fertile plants), the fact that many of our plantable foods no longer fertile, and water use,
I mean, I'm happy to have food to eat, but I know our food quality affects us in ways that most of the population doesn't pay attention to. But guess what, the 'organic' movement has already changed the ingredients of many foods, even ones that aren't organic or pretend to be. The reduction of high fructose corn syrup, trans-fats, and I've noticed a decrease in the use of preservatives and 'natural ingredients' (which usually refer to chemically-made naturally-occurring flavorings) in many foods, and it probably helps that our storage and sealing technology has improved as well. What is in our food becomes a part of us. Keep that in mind.