I'm paranoid. The paranoia shifts depending on the day or month. Last year I read an article about a zero waste family and suddenly became obsessed with creating unnecessary landfill waste....so I stopped buying Ziplock baggies, switched to wax coated sandwich bags and bought a ton of tupperware to send my kids' lunches in. Recently, I read the following article on BPA-Free plastics: http://www.motherjones.com/environment/2014/03/tritan-certichem-eastman-bpa-free-plastic-safe and became paranoid of plastics-how it was breaking down into our foods, our milk, our bodies. Much to John's dismay, this led me to throw out every plastic cup and tupperware (I recycled it, of course!)we owned. I bought Klean Kanteen's Stainless Steel cups for the kids to drink out of and $50 worth of stainless steel food compartments from steeltainer.com and lunchbots.com.