Warren: I take quite seriously Arthur C. Clarke's dictum: "Any sufficiently advanced technology is indistinguishable from magic." What you call magic I call advanced bioengineering. I do not think that an appeal to nanotechnology at the origin of life requires us to posit a supernatural force.
I continue to consider that an interesting but odd position...
You claim to favour a non-supernatural intelligent designer for the origin of life on earth, because you find it hard to believe that it came about through purely natural causes.
But what is your position on the origin of these "intelligent designers" themselves?
Since you claim not to favour a supernatural 'first designer', it follows that you WILL accept natural causes for THEIR origin, or not? There doesn't seem to be any alternative, except an infinite regression of intelligent designers.
But if you accept it for THEIR origins, then why not for OURS? It seems even more far-fetched to accept it for them, since they would be far above our tehcnological capabilities, so their origin isn't exactly likely to be more 'simple'.
Paul Davies says:
"The key to existence will be found not in primordial sludge, but in the nanotechnology of the living cell."
That's how to quote properly... ;-)