Most of it is environmental madness. A small portion is common sense. Unfortunately that particular portion does not even enter into it. It's the gobbledegook they're filling up schoolchildren's heads with. Turns them into militants. Do what you think is right. If you think you are actually generating some big-time poison, then dispense with it appropriately. A gallon of fixer down the drain every year is less in the scheme of things is less than peeing in your swim trunks in the ocean.