While you are correct there is just no way that this is going to happen. Even if you could convince all the West to give up FF then I don't think you could convince China and India. Also there is no way you could convince the majority of people in the West to give up FF because a large percentage still don't believe climate change is man made. I was having a discussion a couple of nights ago with someone who thought it was all a conspiracy and when I said well NASA says the number of climate scientists behind it is 94% they still prefer to believe the right wing radio.

I really can't see this being turned around unless a major technical breakthrough is discovered which I consider fairly unlikely.

At this stage no one knows exactly how bad it will get. I've got between 30 & 40 years left (and no kids) so I don't think it will be catastrophic in my lifetime but I still have basic plans in my head about becoming more self-sufficient in the future as one way to deal with a potential fallout should there be some kind of calamity in the future.