If you go back to that choice point exactly as it was -- with your beliefs, desires, and circumstances being exactly as they were originally -- then why think that you would have made a different choice? We can't make sense of your choosing differently unless we imagine that something is different about that choice point. One might claim that your original choice was indeterministic, so it could have been different even in exactly the same circumstances. But calling a choice "indeterministic" is just to say that, beyond a certain point, we can't make sense of it.