Free will is an illusion

It should be known that free will rests on two assumptions, the first is that each of us possessing free will would have been able to think and act differently than we did in the past which must mean that an individual can consciously choose one path over another e.g. strawberry over chocolate or doctor over fireman. The second assumption is that you are the conscious source of your thoughts and actions e.g. you feel like you want to stand up so you stand up. Both of these assumptions are false as I shall argue. The first problem with free will is that we live in a world of 'cause and effect', every thing that could possibly constitute your will is either the product a long chain of prior causes and you're not responsible for them or it's the product of randomness and you're not responsible for that, or it"s some combination. Free will makes no sense no matter what the combination. Take for example a murderer his 'choice' to commit his last murder was preceded by a long series of prior causes, a certain pattern of electro-chemical activity in the brain which was the product of prior causes, some combination of bad genes and the developmental effects of an unhappy childhood whatever other influences on the day of his crime, when we see the chain of causes that precede a conscious experience and that reach back into childhood or out into the world, then the sense of culpability disappears along with his free will. As disturbing as I find that person"s behavior, I have to admit that if I traded places with him atom for atom I would be him, and would behave exactly as he did and for the same reasons. There"s no extra part of me that could have resisted the impulse to victimize innocent people. If we could see how the wrong genes were being relentlessly transcribed, if we could see how his early life experience had sculpted the micro structure of his brain in just such as way as to give rise to violent impulses, the whole conception of placing blame on him would erode along with any notion that he had free will. The problem of free will is deeper than cause and effect, this is evident as if we pay attention we realize thoughts just emerge in consciousness were not authorizing them. We can't choose them before we think them; that would require we think them before we think them which is obviously impossible. If you can't control your next thought and you don't know what it will be until it appears, where is your free will? For example you may be reading this and trying to pay attention and all of a sudden you find yourself thinking about fighting an army of witches, you didn't choose this thought it just appeared. Now If you are confused about what I am saying you didn't create that state of confusion similarly if you understand what i'm saying and are interested you didn't create that either. Now for a little test so everyone can grasp what i'm saying; pick a movie any movie and say it aloud, first of all we have to eliminate any movie you have not heard of as obviously you could have no picked one of them. Now any movie that you have heard of but it did not come into your conscious mind such as the Wizard of Oz most people have heard of this but did not pick it so eliminate all the movies you have heard of but did not come into your thoughts. Now you are left with the few movies that you originally thought of and the one you picked. Say for example you thought of 50 shades of grey and harry potter and you chose Harry potter. Why did you chose Harry Potter, someone may say because they like it more, but this doesn't solve anything. Why do you like Harry Potter more also where did the idea to pick your favorite come from why not pick the most resent movie e.c.t. as you can see if you dig deep enough to find a reason for the answer you will find yourself in darkness where you cannot answer the question. This is because thoughts only come about as a result of either randomness or from prior chain of causes and event. With these opening arguments I fell I have put forth a strong enough opener to conclude that free will is an illusion.