I've always just assumed that we could be explained mechanically. I know I don't base all of my choices on my 'free will' and I've always had some trouble with the concept. Logically, for me, it follows that some other shadow process is in place and only the tiniest surface layer of humanity and civilization set us apart from each other and gives us the ability to make decisions.
Since I accept this as the way things are, I'm quite indifferent. I'd wish better explanations and scientific approaches were in place, but it doesn't matter much to me.