[lulin]

This. Let's say you had free will. In most definitions, this means you can do what you want, without being forced by anything. But are you really free in your choices? You still can not decide against anything you want. Your mind (or soul, or whatever) will decide what you want to do, and then do that. You may be in the mood to deliberately choose something that is bad for you, but again, this is influenced by your mood. This is actually something I often hear as a reason for free will: If we did not have it, we would never do something that is against our interests. But this will only work if you assume a mind that is both very simple (always trying to choose the best) and extremely smart (so that it can differentiate between bad and good decisions). There is no reason to think that we are like that.