At least, that's my opinion. This is another one of those overhyped junk science things that has really gotten out of hand. Note that you aren't completely wrong because ALL materials release toxic substances when heated enough. However, the controversy I can only assume you are referring to doesn't lead me to believe there's any danger to our use of Nalgene bottle. And, note, that the article that has created this irrational and unsupported panic only referenced Lexan/polycarbonbate, which is is only one of a number of materials used by Nalgene. You can do a Google search and find plenty of well-researched articles that refute the original with far better research and without the hype and absurd leaps of unscientific and irrelevant deduction. YMMV, but I see NO reason to toss my Lexan/ polycarbonate water bottles. Remember, all things are poisonous at some level. Even pure water can kill you.