The historicity of Jesus really shouldn't be being debated. Simply, this site has enough of a summary to conclude that there was a man named Jesus who at the very least had a 'celebrity' reputation about him enough to be mentioned in the sources encapsulated therein. But once there is an agreement on such a man, then the more educated philosophical speculation of "so what" can really begin. Until then, all of this banter is simply the debate of what 'is' is.