I think Lemmy has a problem with history in general, since most people on here have degrees/training in STEM. I see a lot of inaccurate “pop history” shared on here, and a lack of understanding of historiography/how historians analyze primary sources.
The rejection of Jesus’s historicity seems to be accepting C S Lewis’s argument - that if he existed, he was a “lunatic, liar, or lord,” instead of realizing that there was nothing unusual about a messianic Jewish troublemaker in Judea during the early Roman Empire.
Why do we care about history in general?
It provides us with some patterns in human behavior, things that cannot really be studied in a lab. You could approach early Christianity as a way to better understand mass movements, or the different coping strategies of an oppressed/conquered people. You could read the text of the New Testament and ask yourself why these ideas were appealing and what that might say about human nature.
As part of the study of ideas, Christianity is a really interesting expression of how Hellenistic thought mixed with Judaism. There’s a reason a lot of Neoplatonists were Christian.
The early conflicts with Judaism as Christianity developed its own identity have pretty far reaching impacts, with the death of Jesus being placed on all Jews and being used to justify atrocities to this current day.
Or, as a guy that thinks about the Roman Empire at least a couple times a day, it’s a great window into the experience of a backwater Roman province that eventually revolted and was absolutely crushed.
Jesus is not history in general, and I still don’t fucking care.