Consumption is even further removed from externalities than the companies which do this damage in the first place. It always strikes me as odd when consumers are blamed for the damage companies do when producing their goods. It's not like it says on the packaging "During the production of this product, XXX chemicals were released into your rivers" for consumers to make an informed choice in this matter. Furthermore, companies actively try to hide and cover up the damage that they do. Oil companies have known about the impacts of their products on global warming since the 70's and have waged a HUGE disinformation campaign to say otherwise. Now we are in a situation where half the country doesn't believe in global warming, but it's the consumers fault?