This a topic worth reflecting on. I think the answer is, it depends on the situation. Some individuals cause a great deal of pain for others and it's never ending. They don't want to change and treat their 'victims' as enemies. They certainly feel toxic to the ones they mistreat. It doesn't mean they are poisonous per say, but for certain people, perhaps. However, I love your positive insight and know it is true in many circumstances also.