Maybe you argue that we are human and intelligent, so we can override this inconvenience with a system of our own design. My response would be "Sure, put your guns down and burn them, I won't stop you."
Again, it's an unstable equilibrium. Power on the other hand is dramatically more stable.
We don't kill weak links in our population just like mother nature intended and keeps doing left and right everywhere all the time, a good chunk of this forum would not pass those harsh and often random tests yet its/ours added value is non-trivial and surpasses any additional effort by society (at least I like to think that).
'Everything good in this world is kindness'. I have yet to meet a person, situation or story where this would not apply.