I've always found this question interesting and entertaining. I sort of believe we have free will, as at any point in time it appears we can think and choose for ourselves. There is no deity that has decided our fate from our conception. This may be the case, but this version of free will is only an illusion. What I really believe is the truth is that, at any precise moment in time, we are able to make one, and only one, choice. This choice is determined by genetics, our past history, the current environment, and other factors. We may think we are making a choice, but, in fact, we are capable of making no other. If this scenario is the truth, and I believe it is, then you cannot say that we have free will.

So, for example, if I walk into a dealership and end up buying a red sports car, my decision would not be based on my ability to decide freely for myself. It would be, in fact, the only decision I could have made as determined by all the factors that influenced me at that exact point in time.