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Nietzsche's criticisms of Christianity become much more agreeable when you apply it to Christianity as most of the average population defines it, not to Christian theology as a whole.
I see many Christians who neglect proper exercise/diet because "the flesh is temporary but the soul is eternal." I see them passively accept subjugation by a draconian government/media establishment because "we don't live for this world, we live for the next one."
When you bring up issues that we need to fight against they will just say that the world is supposed to get worse before Jesus returns, but Christians have been saying that since the beginning. Many in ancient Rome thought Revelation would happen in their lifetime.
There is a dangerous tendency within folllwers of Abrahamic religion to turn to escapism and put all their stock in an abstract realm separate from the here and now. That is a totally fair criticism. St Augustine himself was a Manichean before joining the Church.
But that does not mean Christianity is fundamentally like this at its core, and that's where Nietzsche was off the mark. Jesus encouraged action in his followers. Charlemagne, Charles Martel, etc were men of power and action. The problems come from bad interpretation.
Totally possible that the coming of the Overman and the Second Coming are the same phenomenon interpreted in radically different ways.
