You're right, of course, Bill. Every one of us is a consumer of resources and a polluter of what's left. It's our job to minimize both to a sustainable level. However, no matter how we attempt to do that, seven billion of us (going on ten billion) just can't manage Earth's resources sustainably. British scientist James Lovelock suggested that Earth can sustain maybe one billion of us. But humans keep popping kids at unsustainable rates. I suspect we've already passed the point of no return.