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 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

**************************

Women = eat sleep spend
Donkeys = eat sleep

Therefore, Women = Donkeys spend
If, Women - spend = Donkeys

In other words, Women that don't spend = Donkeys

**************************

So the Conclusion is:

Men earn money not to let women become Donkeys!

Women spend not to let men become Donkeys!