Remember, documented truth will always outweigh an "opinion".
Hitler reviewed the Church as an obstacle to social unity and as an inconvenient opponent to the inhuman policies of his Nazi regime.
In response to Hitler's repressive program, Pope Pius issued in 1937 the encyclical Mit brennender Sorge, smuggled into Germany and read from Catholic pulpits in March 1937.
This condemnation of the Nazis provoked Hitler's anger, but an even more stinging denunciation was in the works when Pius died on February 10, 1939.
Thus, throughout the war, Catholic priests, nuns, and laypeople were arrested, and thousands died at the hands of death squads, Gestapo torture, or in the concentration camps.
A similar pattern existed as well among any of the Lutheran ministers who protested too loudly, such as Dietrich Bonhoefer, who died at Dachau.
Heroic Catholic figures included Cardinal Michael von Faulhaber, archbishop of Munich, Father Rupert Mayer, and Canon Bernhard Lichtenberg, to name only a few.
Faulhaber survived several assassination attempts and never ceased to condemn Hitler for his atrocities against Christians and Jews.
Hitler did not shut down the churches entirely out of the practical realization that far too many Germans remained Catholics, Lutherans, Methodists, etc.
He relied upon a multi-pronged strategy of extirpating all forms of dissent by the Gestapo and the Party, cultivating support from those members who shared anti-Semitic feelings with the Nazis, and trusting to the apathy of many others.
It is certain that had Hitler managed to win the war, the Catholic Church would have been exterminated in all occupied territories, and Christianity eventually replaced entirely by a cult of state!
Hitler was himself the heir of the philosophical system of the 18th and 19th centuries – in particular Kant and Nietsche – and the host of pan-Germanic groups such as the Thule and other German Nationalist and Pan-Aryan movements that focused in part on the cultivation of genetic purity, the rise of the Aryan master race, and the rejection or perversion of the Judaeo-Christian tradition.
Nazism was thus anything but Christian, and those members who once were believers in Christ found National Socialism incompatible with the ideology they had embraced.
Furthermore, the Nazi Party not only showed aversion to the ideas of divine Providence but gave proof of a definite hatred directed at God such an attitude led to a rejection of Christianity, and a desire to see the Church destroyed.
God bless'