At best that would be a completely amoral theory of motivation, and at worst, one which is indifferent to the possibility of evil. Cultural goodness depends on a culture's beliefs about proper social organization and interpersonal relations, appropriate behavior, and so on. Moral good is either derived from cultural good, or for some writers, is derived from a divine realm instead. In that sense, it is a phenomenological primitive. Satisfaction is good, and if you can't agree to that, there is no possible evidence I, or anyone can invoke to persuade you.
Satisfaction is good without justification, simply because it's good.
It is not practical to make that derivation here. So much for good. Evil, in common sense terms, is juxtaposed to social good. Evil is socially defined, just as social good is. It is a matter of culture and social context.