May I ask why your faith is so dependent on whether or not this man actually existed? Why not consider the fact that there was clearly a huge shift in the first century where hundreds of thousands and even up to millions of people were willing to die and be persecuted over a minority faith both within the realm of Judaism and the Roman Empire. For such a shift in consciousness to have occurred so suddenly within one generation would suggest something real took place.
Why would someone rest their faith on whether or not Jesus existed? Are you seriously asking that? It's the keystone of the entirety of Christian doctrine - if there's no Jesus, there's no salvation. The end. Your argument that lots of people died because of this could easily be applied to JWs - or don't you think that the fact that tens of thousands of JWs were willing to die or let their children die for want of a blood transfusion is convincing evidence of the validity of that belief system?
You can debate whether or not this thing has any real meaning or significance to you or humanity but I think it's pretty evident that something real actually did happen.You can debate whether or not it had any significance to humanity, but I think it's pretty evident that something real actually happened in 1914, given all the JWs that have died in concentration camps, for refusal of medical treatment or while taking a stand for their neutrality based on their belief in 1914.