Well, yes.  It's mostly because they don't understand the underlying problem with their dollars and euros as they are.  But mostly because they don't care for anything more than a soundbite or an argument.  A good way to start weeding out the receptive is by telling them to watch the Money As Debt videos by Paul Grignon.

   http://www.moneyasdebt.net/
   http://video.google.com/videoplay?docid=-2550156453790090544

It's unlikely that any but the smallest minority have the genuine interest level to perform such a minimal task as staring at a screen and listening for forty-seven minutes.  (This is despite all the episodes of Jersey Shore they have no doubt watched.)

Survivors of this initial weeding may then be of a caliber to understand the arguments for Bitcoin.

You make excellent points, but communicating them should have been unnecessary.  A sad world in which we live today.

So is this designed for arbitrageurs in mind?

Such a number is hardly of any information value.  Your interest should be put in a the moving averages of the various markets.

It is my conclusion that you ought to read a bit more about monetary theory before drawing conclusions.

Wow.  You actually advocate currency market manipulation as a means of wealth distribution.  You should work for the Fed.  Or at least run for Congress.

I am the gardener; I care for the leaves.

The Bitcoin concept seems interesting.  It is the first serious attempt at creating a de-centralized, non-commodity backed electronic currency that I can recall.  I'm excited to play my small part in it.