I'm fairly critical of my own faith, and still have it. So "mileage may vary" I guess? Sure lots of people just blindly follow what their parents or some charismatic person tells them. Others are pretty measured and serious in their pursuits.
Incidentally almost all scholars agree there was a historical Jesus, even according to the decidedly secular Wikipedia; there is definitely scholarly debate on just about everything else about Jesus though. If you just study Jesus (mostly with the Synoptic Gospels) you get a different picture than what the institutional church developed over the years. Unsurprisingly, because for many many years it was politically motivated, fairly opposite what Jesus reportedly taught.
It's also interesting reading about the academia regarding the gnostic gospels for instance (which is why they aren't in the Canon, incidentally) - how their authorship is unknown, or they pulled in works provably from other religions, etc.
'Works provably from other religions' is interesting, if that's a metric for exclusion. Plenty of the Bible, and in particular the Old Testament, has similarities to other religions/narratives. See, most obviously, the story of the Great Flood which is predated by Gilgamesh's Epic.
Of course, the Abrahamic argument would be that there is One True narrative, and the others are just riffing off that event. But it's interesting when said others likely predated Abrahamic narratives.
As for the historical Jesus, yes, it's quite likely he existed. The Jewish author Josephus wrote about him within a century of his death, though the narrative was likely corrupted/edited by subsequent Christian interpolators. In its broad strokes, it has Jesus live as an educator and die under Pilate. It mentions his brother, James, and how he died.
I'd say these broad strokes are likely true, and all we can really say on the man without becoming involved in mythology.
Edit: Though, the historicity of the Bible is an entirely different subject. Take, for instance, the supposed census. This was called for a governor who ruled after Herod died, meaning one of the two statements (there was a census, and Jesus was born during Herod's reign) must be false.
Additionally, any such census would require Jesus' family to go to Nazareth, their current hometown, not Bethlehem.
It seems overwhelmingly apparent that the census, and Jesus' family's trip to Bethlehem, was written into the narrative later by Luke, who wanted to cement Jesus' claim to the title of Messiah (the saviour who was meant to be born at Bethlehem).
Which, incidentally, disagrees with Matthew's account of the family living in Bethlehem, sans-census/inn/manger.
The takeaway being that the Bible, for obvious reasons, is an unreliable and often contradictory account, being composed by various authors with various intentions and understandings of what happened.