@FBM,
Maybe in Korea. On A2K, the beam is more heavily loaded on the non-believer side, with all sorts of posters RABIDLY and irrationally arguing on this very thread against the scientific consensus. Each time I argued against their fallacies, they got so pissed off that they insulted me to no end... One of them, Timur, remains here forever with his jaw planted into my leg. I can't shake him off. The issue is massively important to him, evidently, much more than it is for any believer.
For a Jew, a Christian or a Muslim, the question is absurd. OF COURSE the dude Jesus existed. And for those who accept Jesus as a prophet or messiah, the people doubting the historical Jesus are like little ants doubting the existence of an elephant... The elephant couldn't care less. Jesus the gentle giant, as he is pictured in believers' minds, couldn't care less for his minuscule deniers.
So the issue is not even that important to believers. It is, at core, a canard peddled by non-believers for rhetorical gain in their endless (and endlessly boring) disputes with Christians. Another motive, IMO is to get rid of Jesus' intellectual and moral appeal. Like for all denialism, there is something there in Jesus that annoys the deniers, that make them afraid or nervous. That they want to erase. I think it's simply the allure of the guy and his message.