They need to learn how to hate. It doesn't come naturally.
I don't understand why people hate puns, they're language taken and twisted and wielded to create a special brand of humour; they're the result of thousands of years of language evolution and combined with the finest wit, and resulting in an universal reaction of laughter and groaning. In a way it's a form of magic, if you consider magic as the power of words on the world. You could even say it's wit craft.