Think about to pros of this
Pros:
people would be forced to work together or die
It would bring about national unity
People would stop giving a shit about "equal rights"
People would stop getting unnecessary cosmetics
People would start behaving more naturally
People would have more respect for animals, as they are living like them
The only cons I can think of would be the world has been nuked and people will die.
Prove to me that it would be a bad thing to nuke the world.
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At least the OP will be dead.