Graeco Roman civilisation was pretty bloody before the Emperors, with cheerful hobbies like decimating armies to maintain discipline and live dissection of slaves to improve medical knowledge.

That quibble aside, most of what you say I would agree with, with the exceptions that inevitable is usually best determined in hindsight - how do you prove that greater understanding of what was occurring could not have altered the outcome? - And also I don't think that individuals should escape all responsibility - the group around Bush is still a criminal clique intent on subverting the country in their own interests, even if the tide of history is that which empowers them to do so.

Don't get me wrong, I do believe the President may have nefarious reasons for his decisions.
But!
I do recall a speach recently were he told the American public that "Americans are addicted to oil."
If I read between the lines I would interpret that as "...Hey you idiots, we're in Iraq to feed your insatiable thirst for oil. Why are you bitching about the war..?"
This is one of the many reasons why we all share the blame - out of ignorance.

It would be ideal if there was a greater understanding of our current crisis to quell a potentially devastating conflict....But how many individuals actually understand the concept of peak oil globally?

1 million, maybe 3 million?

Instead of the majority seeking knowledge by the erudition of history - so as to insure mistakes are not repeated - all I see are the majority of people clamorous for more 'bread and circus'.