The number one reason you should eat organic food is to be healthier. Organic food achieves a healthier you by limiting hormone-disrupting chemicals that are present in the industrial agriculture food system; and increasing the quantity of nutrients your body needs. One also needs to start cutting personal care products and home goods from your routine that could be messing with your hormones. Remember, the largest organ is your skin.
Highly processed and junk food are still not good for your health. Just because it's organic doesn't mean it's beneficial; It's not as bad, but it's not as good as whole foods.