At the end of the day, despite all of the (endless) philosophical debate about free will, the entire human race accepts that it exists. We accept it when we tell people, "you made a great (or terrible) choice!" We accept it when we try people for crimes in courts of law. We accept it when we admire our heros for what they've accompliched, or despise others for the damage they've done.
Because without some measure of free will, absolutely none of that makes any sense at all. I cannot be acclaimed for some great thing I've done, or villified for the opposite, if there is no sense in which I could have chosen to do otherwise. Punishing your kid for not doing their homework would be totally unjust if she had no choice in the matter.
For myself, I strongly believe that there is a real "I" inside of me, located (I think) in the brain stem, not the prefrontal cortex where too many have been looking for it for so long -- particularly (as some now think) the reticular activating system. And it is from here that I think free will actually arises. No doubt much of our decision-making is activated by inputs, internal mental states, etc., etc., I think that this "I" has the final ability to say "yes" or "no," and in the latter case, stop the decision. I tend to call this "free won't" (that's not original with me).