Deep Belief You've Held That Turned Out to be Wrong

Pretty straight forward, what's a time you had a very deep belief, and were proven wrong?

I remember getting my ass handed to me back when I was a Christian for example.

Go !

Santa being real

That Robtard was a good guy

Originally posted by BrolyBlack
That Robtard was a good guy

Bro, at least charge me rent for that mental living space.

None.

All my beliefs are correct.