my point is that the guarantee is a very weak one, and one based on tradition rather than facts. something being used for thousands of years merely means it doesn't cause harm in small enough timescales so that people can associate it with the effects. see: smoking, which is dangerously poisonous, but the effects are on such long timescales that its negative effects are dissociated from it.
>Finally I don't understand why people are so angry at organic produce. I rarely buy it too, but what's the big deal? It sounds like they need to prove something. I don't get it.
I guess the anger is directed to both the people that are gullible enough to buy it and continue to perpetuate the myth that it's somehow better, and the companies pushing organic produce (by exploiting said ignorance, and perpetuating said ignorance as a way to sell high margin produce)