Their hatred of guns is deeply rooted in their hatred of personal responsibility. The very idea that you might be responsible for your own safety is abhorrent to them. The very concept that the maintenance of personal freedom and responsibility might actually be worth living a more dangerous life is simply a repellent concept to them. They want to be kept. They want others to make their choices for them. They want to live the comfortable, gray, meaningless lives of a pet.
People that do not desire this are lamented by them, not because those people are wrong, but because those people demonstrate to them how absolutely pathetic they are, and they hate that.