I've always been a mite puzzled by people who think Jesus was entirely made-up. Like, if you were gonna make up a religious dude to start up a church, in that time and place, that... Would not be the dude? Especially the bit about hanging out with sex workers.
Now, if you want to go for "Dude was a standard cult leader with some really great fuckin' lines (and more his followers probably tacked on later), passed off his horny shit as sacred work, got WAY mythologized after death", I mean.