Yes, perhaps we should go all the way and go back to burning dried animal dung to cook in our mud and grass huts, and only walk wherever we need to go, giving up all the things oil products and modern transportation give us, including electricity, clean water and sanitation, refrigeration and air conditioning, food that does not all have to be locally grown, everything we wear, cell phones and computers, medicine and pharmaceuticals, and on and on. On second thought, I'll gladly deal with a few smoggy days per year and keep all of those miracles of a developed world, all made possible by cheap fossil fuels. Just ask the one third of the world that currently lacks such access. I'm pretty sure what we have is their dream life and they would trade lives with you in a blink. Any takers?