It doesn't matter. It doesn't matter if there was a "real" Jesus. The Jesus of the Bible, the Jesus that is worshiped is an impossibility. A fiction. His life is full of details that defy basic biological and physical laws. On top of that, nothing he supposedly said was written down at the time, so we have no idea if what is recorded to have been his sayings in the Bible are things he actually said.
I always relate it to Ian Fleming having a schoolchum who's father's name was Ernst Stavro Bloefeld. So was there a real Ernst Stavro Bloefeld? Yes. Was he a supervillain fighting the world's greatest secret agent? No.