> most people would murder and kill if there weren't any consequences to doing so

Do you have any evidence to support this? Feels like this opinion is made up, for unknown reasons.

In reality, psychopathic tendencies are about 4.5% in the general adult population, a far cry from 'most people', with the gold standard assessment being only 1.2%. [1]

From that same article, "The construct of psychopathy is understood generically as a type of personality disorder characterized, among other important features, by the presence of behaviors that conflict with the social, moral, or legal norms of society, giving rise in many cases to clearly criminal behaviors ..."

There's also the bagel experiment described in Freakonomics. [2]

[1] https://www.frontiersin.org/journals/psychology/articles/10....

[2] https://pricetheory.uchicago.edu/levitt/Papers/WhatTheBagelM...