I know that Ehrman is a self described agnostic leaning atheist. So, he doesn't have a dog in this race. But, even he marginalizes those that would say that the man whom the entire earth counts their years by never existed.
I don’t think there is any doubt that Jesus existed. There are a couple of scholars who’ve argued he didn’t exist. There are a lot of voices out there saying that he didn’t exist. But they’re not by scholars who are actually trained in any historical disciplines. There are voices on the internet. But there are voices on the internet for all sorts of things. Scholars who study this stuff really, there isn’t any, it’s not a question that’s debated among my colleagues. It is not debated. Because the evidence is so overwhelming. - Bart Ehrman