On the other hand, you also have to take into account the fact that Jesus was almost completely different from what everybody expected the Messiah to be. They thought He would come in the form of a great earthly king who would deliver them from the Romans. Instead, He was a peacefully rebellious carpenter who died a humiliating death.
Also, I'm pretty sure the ideas of "blessed are the meek" and "love your enemy" are Christian originals. Unless you have some sources to show me otherwise.
Speaking of which, I'd like some sources for the other things you just said.
I provided you links before and I sincerely doubt that you read them. Which sources do you want? Rabbi Hillel or the Mithraic Eucharist. Or the various dates?
If you posit that there must be someone real behind it are you suggesting that there was a real Cronus, Zeus, Centaur, Dionysis, Hercules, Lycurgus, Mithras, Isis, Osiris etc?
Which would suggest that there needs to be a charasmatic figure behind it, not necessarily that the figure is the focus of the religion needs to have existed. Which gives you Paul, who never physically met Jesus, quoted any of his sayings and states that he receives his knowledge through divine revelation. Who just happens to have the earliest extant Christian writings. So perhaps there need not be a historical Jesus but there would need to be a historical Paul.
As for the humilating death, well actually the idea of an 'Atoning death' had been around for possibly a millenia prior to Christ, Astarte and Tammuz, Attis, Mithras, Adonis etc.
UP, you identify as a Christian, if there was no historical christ would that affect your faith? As it is you can only know a spiritual christ anyway. Does it really matter whether Mark (who if he was who he was meant to be) wrote down the recollections of Peter or whether he was divinely inspired, as I assume you believe Paul was?