The caring side of human nature is all around us Brian; to pick one example the Victorian government spends money to support children with a variety of intellectual, physical and behavioural disabilities - in the not to distant past such kids might have been considered a burden on society that are at best ignored and at worst disposed of. One can find plenty of examples of good or bad human behaviour, but I think most people try to help others rather than kill them, depending on the circumstances.
Still, you might be right Brian but chin up - we're not dead yet
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