I looked at this article, but I don't think the experiment proves as much as Libet claims it does. Neither he nor subsequent researchers seem to have gone beyond toy problems (what EEG activity appears in someone writing or programming?).

Also, I find it hard to believe that free will "lives" in one or another part of the brain; neither determinism nor randomness is freedom, and a physical "organ of free will" would have to be either deterministic (from macro-scale physics) or random (from quantum-scale activity).

I agree that living without free will is probably psychologically insupportable; even Muslims and Calvinists, who believe in double predestination (and Marxists, who believe in historical determinism), live as if free will was true. (Read _The Pilgrim's Progress_ and tell me that Bunyan really believed Puritan doctrines...)