There's a lot there, I'll just take it piece by piece. "Turn the other cheek", "love thy enemy", etc... I think these are great examples of Christian teaching being both inconsistent in its message and completely failed in its ability to influence to morals and ideas of its adherents. It's also a great indication of the Christ-focused heretical group within Judaism being completely apocalyptic, not really focusing on sustainable life on earth as Christ was supposed to come back within their lifetimes. At best, "turn the other cheek" is one of those platitudes that, like so many "Eastern" gurus in the West, sounds better the less you think about it. As advice for general living it is awesome, sure, but it isn't given as advice, but as divine mandate.