It is not the responsibility of the universe to reward right and punish wrong. I can accept that.
But in society we have laws, and they do determine what is right and wrong on that level. The government can reward right and punish wrong. And besides governmental laws, we have personal relationships with other people. We can do wrong or right in relationships, and receive bad or good consequences on that level, too.
Our actions DO have consequences. We can act ethically and lawfully, and reap the rewards; or we can act unethically and illegally, and reap the negative consequences.