Does the fact that there was prehistoric religion and that humans have displayed religious behaviour by worshipping gods long before the creation/rise of the Abrahamic religions (and the other major religious groups such as Hinduism, Buddhism and so forth) prove the fact all these religions are man made, thus false and hence a god does not exist?
Supposing if god did exist, why did the religion that that god came from only came about in more recent times (few thousand years back), and not since the beginning of time?. For example, I claim I am a follower of Religion ABC and I believe in the god of Religion ABC. If Religion ABC only came about 50 years ago, I have to ask, if Religion ABC was real, why was it only formed 50 years ago and not from the beginning of time? Logic tells me that religion ABC is man-made.