@timur,
I'm not religious. And as somebody pointed up thread, many of the scientists who conclude Jesus existed are atheist. But ALL of those arguing against it are atheists. And motivated by bias, I contend.
A majority of specialists on this issue conclude that Jesus was a historical character, by the way. About like for global warming... This issue is treated seriously by some. And just like for global warming, the dissenters are not without extraneous motivations in my view.
Why do you think the existence of Pontius Pilate was doubted for so long? Because he is mentioned in the gospel. Otherwise, there were many independent mentions of him in the literature but no, that was not enough... To some. He HAD to be doubted. Until they found his name carved on a stone and that was the end of that charade.