That's all well and good, but by the standard of historical documents from the same time period, the New Testament is pretty darn good. The Gospels were all written within 60 years of Jesus' death. There were eyewitnesses around to say "that's not what I saw!"
Other historians of the time (e.g. Josephus) corroborate Jesus' existence.
If you're going to pick a fight with a 2000 year old religion, don't embarrass yourself with the "it was all made up" and "Jesus didn't exist" arguments.