Christianity is Levantine and Abrahamic in character. it has its positive qualities, and it's deeply entrenched in the West, but ultimately it's foreign to us. if we're to have a Volkish religion, it will have to be a different tradition. with that said, I think Christianity is here to stay, so even in the best case scenario, it will have to be contained and negotiated with rather than outright extirpated.
in many ways, Christianity was a backlash against the degeneration of the Hebrew religion, which was already well underway by the 1st century AD. the original Hebrews, while Abrahamic, had many based qualities, which is why everyone from White nationalists to black nat'lists have tried to claim that heritage. but their descendants the Pharisees were of a dramatically different, inferior character. since the Hebrews were always concerned with the primacy of Law, its degenerate form became litigious and hypocritical, concerned with the letter of the law and not its spirit; an attitude which is all too familiar today. Christianity was a reassertion of the spirit of the Law. while that was a great achievement, it's still characterized by egalitarianism, slave morality, and life denial, as others have said.
modern Judaism is a direct descendant of the Pharisees and the Talmud, NOT the Old Testament, which explains alot. Christianity evolved from Hebrew roots, so it represents a definite break from Pharisaic ways, but it still carries the baggage of Abrahamism.