...if it makes you feel good, keep believing that...doesn’t make it true, however...
I take it you are referring to the schism.
In reply, Luther was an Augustinian monk. He did not intend to leave Catholicism, but to reform it; however, he was pushed out by the RCC due to the perceived strength of his supporters against the HRE hierarchy.
As you must have read, there was a great deal of corruption at the time, involving but not limited to the sale of indulgences. It may be useful to compare that historic fact in light of the present corruption by a few depraved RCC priests toward children, which has been acknowleged, and steps taken to self-correct it; however, that portion of corruption does not reflect on the faith itself or the tenets of the faith. At the time of Luther, I suggest it was a similar situation -- some corruption, but not total corruption. Unlike today, opposition to corruption in the RCC was reacted against rather than responded to at that time.
So, in terms of learning from history, the schism has done both faith traditions a favor. The RCC is now more aware of an obligation to re-examine its culture and administrative aspects when something goes wrong, due in no small part to the Reformation and the 30-years wars that resulted. And the reform tradition is learning to its horror that the lack of a magisterium and active authority keeping the tenets of the faith on target contributes to its own kind of theological corruption.
Personally, I hold out hope for the reunification of the major streams of Christianity: Orthodox, Roman Catholic, Reformed and Evangelical. It is more productive to me to work towards the unity Christ desired of us by researching the actual theology than it is to blindly defend the tradition I "belong" to and cast suspicion on other believers.
Good to see your discussions on this thread. I share your outlook on the reunification of Christianity. Plenty of sheep and goats can be found in all of the denominations.