It's been addressed; evidence and theories suggests there's no need for free will to explain human behavior. Libet's experiments was the first; there's been a lot of similar experiments sinc (like Hayne's experiment in which brain scanner's can predict the choices people feel that they make spontaneously).
This quote may address the OP better:
"The unease people feel at the potential unreality of free will, said National Institutes of Health neuroscientist Mark Hallett, originates in a misconception of self as separate from the brain."
-author of above article, Brandon Keim, paraphrasing Mark Hallett