Hate is a product of fear, fear of differences, of loss or the perception of possible loss.
It is found throughout the animal kingdom, if something threatened your offspring and you had the ability to scare off or destroy the threat, would you? Other animals do this as well, we with our language have developed a social order far more complex than any other animal on earth, and part of this was warfare and part civility, which increases our overall chance of survival, having offspring, and ensuring our offspring survive as well, so hate for most of us has become either usless, or out of its uslessness it persists in a way which is different than most, some call it sick, some call it neccessary. There are times when lions and gazells are very close to eachother and do nothing, they understand that at times, there is no reason to fear, not hungry.
There are also times when a male lion will kill the cubs of females when he has just become the Dominant male, thus ensuring HIS offspring will be those which are allowed the resourses of the pride, the females understand this.
Most of us on this forum are far from ignorant, as far as the statements of being saved by just believing in something because some say too, its a free country/world, and its your right to express yourself here. One humans trash is anothers treasure, beauty is in the eye of the beholder, reality is not dependent upon such things as observers or perceptions.
Theories are like dust in the wind, the concept of self and place in the universe is what they all strive to understand, live with and pass on.
I have a theory, it is that there never will be unholy theories (theories without holes) :)