The three topics which suggest that Jesus never existed are:History, Comparative Religion and Solar Mythology. Here we go.
1. History. It's inconceivable that during the alleged time of Jesus no one bothered to write down anything about this most extraordinary person, yet we have nothing. Even the earliest Bible reference to Jesus dates to at least A.D. 64, and the first Gospel, the Gospel of Mark, dates to at least A.D. 70 (and probably to A.D. 170).