I wholeheartedly agree that it's more due to how the state of the world is today, something I hadn't considered before. I'd also like to see some numbers tied to how the selfishness is induced, but probably impossible. Thank you for your perspective!
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For example, I have a low opinion on humankind's general capacity to be kind to one another or self-sacrificing (though there are always exceptions), but I feel like that's probably more due to the world we live in, rather than any genetic or nature-based stuff.