@Greg phil,
Ok chaps, I agree, it has got a little off topic so here is my response...
As far as I can tell, the conclusion that free will, at least, "true free will" does not exist no matter how you spin it, which is why I am so very confused as to why the whole debate seems to hinge on "determinism vs non-determinism", which I think actually has little or nothing to do with it. Think about it, objective claim: Either an event has a cause, or it does not...true or false...now interestingly, neither of these options allow for an event like a "choice" to be "free" in anyway. If the choice was determined, then it was that determining factor that controlled the outcome of the event. If the choice was not determined, then again, it was not you, but random chance that controlled the outcome. Randomness is not control. I neither no nor care if the universe is deterministic or not because it doesn't make any real difference to my life. Personally I think that some things are deterministic, in fact, most things, and a very few things are random. Neither of which is controllable though, "true control" I would say, does not exist, because you must always ask, what controlled that if not randomness?
So thats the facts, I think...open to debate that one...Now as regards the "interesting" factor. Actually I think a life without free will is far more interesting. Life is not about controlling everything its about exploration. From the day you are born til the day you die, you are put in a certain situation with a certain genetic profile, for the purpose of "experiancing" existence, and finding more and more about yourself each day, and when it is all over, finding another like minded human, mating with them and passing the gift of existence onto the next generation. Yes, that is the meaning of life arn't I a genius! My point is, a choices are not made they are discovered, every time you choose something you have discovered more about yourself, I find this idea facinating!
As regards ethics, a lack of free will doesn't affect it in the slightest, merely the idea of "moral worthiness", which is a totally different arena and, to be honest, a rather abhorent idea. Nobody is any more "worthy" than anyone else, however, they do find themselves performing actions that are either desirable by the mainstream, or not. Ethics is, simply, a recognition that other people exist and a system of acting accordingly, since everyone's circumstances are unique their ethics too are unique. Ethics is an inescapable result of our being a social species, it is ingrained on us just as much as any other social species. Someone who commits destructive harmful actions, would reasonably be punished because it 1-teaches them not to commit evem more harm, this is desirable, 2- protects others from dangerous people and 3- deters others. None of this is dependant upon him/her beinbg "worthy" of this, nor does someone need to be "worthy" of my praise to get it. If someone has done an altruistic thing, then praise them so that they learn that altruism yields positive results. Yelling at people and saying that they "should" or "could" have done otherwise, is utterly pointless and achieves nothing, the deed is "done!", past tense! So what is important is what you do about it "now!".
Sorry that was quite long...