Good is not different from Bad?
From a Theravada perspective, there is absolute good and absolute bad. The 2 can exist mutually exclusively.

Suffering is absolutely bad and the mind states that lead to suffering are absolutely bad. 
Nibbana is absolutely good and the mind states that lead to Nibbana are absolutely good.

There is no suffering in Nibbana and there's no Nibbana in suffering. They arise/exist without requiring the presence of eachother.