Yitayninwut: The motivation/desire for giving and the feelings of satisfaction after giving are all emotions. Without feelings/emotions one would not desire/accomplish anything. So Hashem created us with these feelings in order for us to act upon them and do good deeds; therefore the essence of these feelings are also considered “Tov”/Good since these feelings make someone a kind hearted person who does good deeds for others. It’s irrelevant that the actual physcological essence of these feelings are self serving.
