I find myself in the unaccustomed role of the optimist on this topic. We are NOT doomed to a future of agrarian squalor - even though that is the apparent avowed goal of many of you.
We have the technology to build super-insulated, off-the-grid alternative housing from the detritus of our energy-intensive civilization, such as the various Earthship designs.
We can maintain the distribution of foodstuffs at an end cost that is probably somewhere in the range of 4X to 10X the present cost of diesel train and heavy truck transport, using alternative fuels and electric vehicles. The luxury of foods not grown within 50 miles of your door will still exist, but you will enjoy it a lot more although a lot less frequently.
I think whether we lose the electric grid and the internet are 50/50 propositions - at least in the USA. I also think that we will "spend our time cruising the galaxy in metal shells looking for who knows what" (as rollin puts it) but I don't know if that will take decades or centuries.
But I do not believe we are entering another Dark Age, either - knowledge that exists in digital form will never be lost.
I simply think that many of you are realizing the truth in one of the things I have been saying all along. Mankind really only changes via the slow process of evolution. The last such change, the transition from tool-using ape to Stone Age technocrat, occurred 30,000 to 50,000 years ago, and resulted in the Solutrean people of Europe replacing the Neanderthals - and somewhere in that struggle, the Clovis culture of the Americas was born, producing the various Paleo-Indians.
All advances since then are due to the accumulation of knowledge, and this was intensified by the creation of writing - which in the end was the most disruptive tech of all, allowing the accumulated knowledge base to exceed the mind of a single human and to persist beyond a single generation.
Don't waste your time waiting for mankind to suddenly become enlightened, adopt the philosophy of Buddha, Karl Marx, Jesus of Nazareth, John Perkins, or even M. King Hubbert - and then behave differently and with wisdom. It's not gonna happen, nor does it need to.
Allow me to prescribe a simple medicine for your gray thoughts if I may. Whenever such melancholy overcomes me, I like to sit and watch Werner Herzog's amazing documentary film,
The Cave of Forgotten Dreams. It is the record of the epic struggle of the first humans, who were coping with problems even greater than the end of fossil fuels, some 30,000 years ago.



These were people, they had problems worse than ours - the very real "climate change" of an Ice Age, and an environment full of mega-fauna predators such as cave bears and sabre-toothed cats.
They survived, and they became us.