Honestly this is the kind of attitude that has prevented it from happening. It's the logic that if only humans went back to fighting with spears, we'd once again 'be tough'. Except that isn't how humans have conquored nature. Look closer- even the spear is an invention of the mind.
I proudly state I am entitled to use my brain to overcome challenges, and will damn well riticule anyone that tries to imply that we as humans would be better served enduring unnecessary hardship for the argument that suffering is somehow good for us.
Despicable.