The income was taxed when it was earned. What reason is there to tax it twice?
I paid tax on my income, so when I buy milk at the store, the store shouldn't pay tax because the income was already taxed and the employees there shouldn't pay tax when they get paid, because the income was already taxed.
I paid tax on my income, so when I buy milk at the store, the store shouldn't pay tax because the income was already taxed and the employees there shouldn't pay tax when they get paid, because the income was already taxed.