Money – How much were the 30 pieces of silver (Judas's payment) worth?
christianity.stackexchange.com
christianity.stackexchange.com
Not a bad thought to shut down the tendency towards people pleasing.
It's generally true even if money is not involved. Another reason I tend to keep my own counsel.
So, like everything else, he is a parable that is supposed to have a doctrinal interpretation. Find out the doctrinal interpretation, and you have drained the story dry.
Modern historians agree that he probably did exist. Like a lot of subjects from the bible it's not definitive and there are different theories, but it's definitely very far from "no evidence or reason".
What the assumption utterly fails to account for is the extraordinary volume of such obvious fabrication, of a magnitude that appears nowhere else in the historical record. If any of its subject matter were true, what would motivate the enormous industry of fabrication and insertion of late alterations into contemporaneous texts?
The gradient is toward decreasing adherence to the convenient assumption, and more critical scrutiny.