**and my childhood heroes included men like Martin Luther, John Calvin,...**
I don’t see how one can have both Luther and Calvin as heroes. Don’t their doctrines disagree with each other?
It would be like having both President Jefferson Davis of the C.S.A. and Lincoln as heroes. Or the Emperor Maximilian of Mexico and Juarez.
Disagreement with Luther's doctrine doesn't seem to prevent many Protestants's from viewing Luther as a "hero" because of his role in the so-called Reformation.