So I guess your real question is "what does being 'good' get you?".
It gets you a lot of things. It gets you the realization that you are a good person. It gets you the peace and freedom of being honest with yourself and others. (A dishonest lifestyle is a lot of work and stress to maintain.) It gets you the friendship of other good people, because good people don't associate with bad people, and bad people don't associate with good people. It gets you the respect and appreciation of the people that you have to associate with, like your coworkers, and your family. And it gets you the sense of positive accomplishment as your goodness increases the well-being of world in which you live.
As you get older, you will come to appreciate these things more and more. Because a life lived in selfishness is a life lived alone, and for nothing, and in fear and resentment. While a life lived in generosity is a life lived with courage and positive purpose, and with good result.