Is it really a must to get organic stuff like food, or even shower,spray product?I mean, some people would say that for young babies and kids, should let them use organic products first. When they get older then you can change them to normal products. But what I'm worrying is , by letting them use organic product which is good for them when they r young. But when they start taking food or apply any product that r not organic. Are their body immune? Or will they start getting more problem ? you know how old people would say their body get stronger when they get immune to everything.