Hitler sought the destruction of Christianity.

[Nye Bevan]

70. Here's a 2002 NY Times article with more information.

http://www.nytimes.com/2002/01/13/weekinreview/word-for-word-case-against-nazis-hitler-s-forces-planned-destroy-german.html?pagewanted=all&src=pm

In the 1920's, as they battled for power, the Nazis realized that the churches in overwhelmingly Christian Germany needed to be neutralized before they would get anywhere. Two-thirds of German Christians were Protestants, belonging to one of 28 regional factions of the German Evangelical Church. Most of the rest were Roman Catholics. On one level, the Nazis saw an advantage. In tumultuous post-World War I Germany, the Christian churches ''had long been associated with conservative ways of thought, which meant that they tended to agree with the National Socialists in their authoritarianism, their attacks on Socialism and Communism, and in their campaign against the Versailles treaty'' that had ended World War I with a bitterly resentful Germany.

But there was a dilemma for Hitler. While conservatives, the Christian churches ''could not be reconciled with the principle of racism, with a foreign policy of unlimited aggressive warfare, or with a domestic policy involving the complete subservience of Church to State.'' Given that these were the fundamental underpinnings of the Nazi regime, ''conflict was inevitable,'' the summary states. It came, as Nazi power surged in the late 1920's toward national domination in the early 30's.

According to Baldur von Schirach, the Nazi leader of the German youth corps that would later be known as the Hitler Youth, ''the destruction of Christianity was explicitly recognized as a purpose of the National Socialist movement'' from the beginning, though ''considerations of expedience made it impossible'' for the movement to adopt this radical stance officially until it had consolidated power, the outline says.

Attracted by the strategic value inherent in the churches' ''historic mission of conservative social discipline,'' the Nazis simply lied and made deals with the churches while planning a ''slow and cautious policy of gradual encroachment'' to eliminate Christianity.

The short answer is that other events prevented Hitler from carrying his plans through to fruition.