Do you think it's nature that people are born without it, or nurture that everyone has it and it's squashed by early upbringing, conformity, rules, and "don't do that", schooling, punishments, rushed and disinterested parents?

(I think it's a thing that introducing money changes intrinsic motivation into money-driven motivation and can ruin it. And that might also happen for children for other rewards - praise, sweets, dessert, etc.)