I don't care if he did or not. There's no historical evidence for him outside of the book of myths, (a little in Josephus) but that's it. So my belief is that he probably wasn't historical but mythical like the other hero myths.
Personally, I don't care if he lived or not because his teachings are immoral.
Vicarious sin (original sin-you are held responsible for the actions of others whom you had no control over ) That's immoral.
Vicarious atonement through a scapegoat--you can be absolved of your personal responsibility no matter what you do, as long as you just "believe" the scapegoat died for you.
It's immoral crap.
No wonder there are so many more christians in prison than there are atheists.