Happy Pig Theory

Human = eat + sleep + work + enjoy

Pigs = eat + sleep

Hence, Human = Pigs + work + enjoy

if, Human - enjoy = Pigs + work in other words,

Human that don't know how to enjoy = pigs that work

Men = eat + sleep + earn money

Pigs = eat + sleep

Hence, Men = Pigs + earn money

if Men - earn money = Pigs in other words,

Men that don't earn money = Pigs

Women = eat + sleep + spend

Pigs = eat + sleep

Hence, Women = Pigs + spend

if, Women - spend = Pigs In other words,

Women that don't spend = Pigs

Summary: Men earn money not to let women become pigs! Women spend not to let men become pigs!

Men + Women = 2 Pigs

Wish all the pigs happy forever.