The Christian person who reasons that since he is under grace he may live any old way he wants, that he may live in sin, has not only miscalculated the Cross of Jesus Christ and the meaning of grace, but he has also miscalculated the meaning of life.
So many Christians are under this impression, and about sin. They fail to realize that wherever sin appears, it leaves a path of death, destruction, misery, and unhappiness. Sin is never good; it never commends the grace of God. And it is utter folly for the individual Christian to reason that, since he is under grace, he may live in sin without consequences. All you need to do is read Romans 6 to put down that idea.
Having the best of both worlds is a humanistic and false thought!