Yes we all do. 100%. But what we need to realize is we don't HAVE to. We don't HAVE to live in cities. We can grow our own food and use alternative fuels & methods to produce energy. We can all together avoid plastics and other products that use fuels. There are people that do it:
http://urbanhomestead.org/journal/
If we continue to live in our modern day society, which most of us will, then we need to take our usage waaaayyyy back. It is possible- quit waiting for the future. If we don't do it now then we might as well enjoy our environment while it lasts, because we will be the last generation to experience it. We are poisoning our planet and ourselves.
-Diana