I agree with you 100%. That said, even water and oxygen have a rather startling list of possible side effects, with far higher probability of serious side-effects from over-consupmtion. I try to stay rational about things. Pretty much anything [i]can[/i] harm you, in some way. It's about weighing the pros and cons, and seeing what you're willing to live with the risks of. If no one ever took risks, this world would be a much different place, and rather boring, I'd imagine.