Why is it Christians need something to hate?

They need something to "hate"- presumably meaning that "they are directing negativity towards someone" because true Christianity is so absolutely demanding and they so often fail. Any imbecile who actually reads the Christian Gospels can see that the teaching is that of unconditional love- whether it is towards those who think or believe differently from you or not- like in the parable "The Good Samaritan." And how often do you see hipocracy in Christians? Yet Jesus instructs to remove the plank from one's eye before telling of the speck in the eye of another. But in this contentious, brutal world of ours, the teachings of love would make an imbecile of anyone. And so instead, many take a comfortable path of villianizing others- or worse, trying to evangelize others when they themselves offer no love to anyone but to their "own." The contradiction isn't in Christian religion but in the humanity that tries to practice it. And of course, in those who don't- who ume to know Christian history when virtually all the hate they identify as absolutely persistent is only as recent as the medieval era.