While both non-Christians and Christians experience the terrible consequences of their sins here and now, those consequences are even worse for believers because we are God's children with the Holy Spirit living within us. Certainly conviction of sin is greater. That is not necessarily true for a non-Christian. They actually delivered bondage and temporal judgment. May we all take heed.
Sin pays lousy dividends.
It is a return to a former way of life that is inconsistent with who we are today. The celebration of communion is a reminder that we have been cleansed from our sins because of the sacrifice of Jesus Christ.