Funny questions !
Human = eat + sleep + work + enjoy
Donkey = eat + sleep
Therefore ,
Human = Donkey + work + enjoy
If, Human - enjoy = Donkey + work
In other words ,
Human that don't know enjoy = Donkey that work
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Men = eat + sleep + earn money
Donkeys = eat + sleep
Therefore, Men = Donkeys + earn money
If Men - earn money = Donkeys
In other words ,
Men that don't earn money = Donkeys
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Women = eat + sleep + spend
Donkeys = eat + sleep
Therefore , Women = Donkeys + spend
If, Women - spend = Donkeys
In other words ,
Women that don't spend = Donkeys
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To Conclude :
* Men earn money not to let women become Donkeys !
* Women spend not to let men become Donkeys !
* Man + Woman = 2 Donkeys !
** And the Donkeys lived happily ever after