The Germans were not Catholics...they were Lutherans...Hitler did have his problems with the churches...but he by no means destroyed them...I don't think Hitler "hated" Christianity...he just didn't have any use for it...he disliked the politics of religion...'tis why he was in to the occult and paganism...in which Europeans still celebrate paganistic rites to this day....
Southern Germany where Hitler first came to prominence was and is, heavly Roman Catholic. Northern Germany/Prussia and the titled aristrocrats were primarily Lutherern.
Not all Germans were Lutherans. The Catholic Church had numerous bishops, priests and nuns in Germany when the Nazis came to power. Many met a grim fate. Catholics in other countries that Germany conquered during World War II - like France and Poland - were also viciously persecuted.