Can the philosophical mysteries be solved at all?
B F Skinner thought that consciousness was illusory but if that was true how do we make sense of conscious awareness. What does appear to be more potentially accurate is the Buddhist idea that there is no self, because it does appear to be more of a construct of fleeting consciousness rather than as an actual entity in it's own right. The 'I' of awareness remains but as Ken Wilber, argued more as a witness.
As for the idea that there is no God, no life after death and no free will, it is possible to come up to that conclusion, but, on the other hand, it does not mean that we may never consider other possibilities. While the lack of clear evidence can be seen as perplexing, it does give scope for imaginative possibilities.