Moral Intensity

If a man with an enormous amount of money and influence devotes his life to the pleasures of the flesh and is intensely happy up until his final moment, should we moralists, who are concerned with human happiness, not be intensely happy for him? Or do we know him better than he knew himself? Do we know that deep down he was unhappy, and should we therefore strive with our judgments, our laws, and our loftier purpose to keep those like him confined within the limits of true contentment?