You are a donkey! as per Modern Mathematics.

Equation 1:

Human = eat + sleep + work + enjoy
Donkey = eat + sleep

Therefore, Human = Donkey + work + enjoy
so, Human - enjoy = Donkey + work

In other words, Human that don't know enjoy = Donkey that work --> (A)

Equation 2:

Men = eat + sleep + earn money
Donkeys = eat + sleep

Therefore, Men = Donkeys + earn money --> (B)
i.e., Men - earn money = Donkeys

In other words, Men that don't earn money = Donkeys --> (C)

Equation 3

Women = eat + sleep + spend
Donkeys = eat + sleep

Therefore, Women = Donkeys + spend --> (D)
i.e., Women - spend = Donkeys

In other words, Women that don't spend = Donkeys --> (E)

Conclusion:

From C and E, Men that don't earn money = Women that don't spend

So, Men earn money not to let women become Donkeys! (Postulate 1)
Women spend not to let men become Donkeys! (Postulate 2)

From B + D, we have
Men + Women = Donkeys + earn money + Donkeys + spend

From Postulates 1 and 2, we can conclude
Man + Woman = 2 Donkeys and the Donkeys live happily ever after! :)

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