@Cogs: You clearly did not read the article I linked to. All the reasons you list above why peak-oil might not be an issue have been taken apart in that article (and each one in more depth in many other places) already, so I'm not going to repeat it here.
As the richest and most powerful people and some of the biggest companies in the world prepare for peak-oil, I don't see why I should ignore the problem. So me and my family are preparing for it, and that includes having very-low-power ARM-based computers available.
Finally, if peak-oil should really turn out to be a non-issue, we will still be better off, as most of the things we do to prepare for it, make good financial sense anyway.