Born with original sin, we can become self-centered and commit sins. On the other hand, we are capable of loving others too. There is another desire we are not always aware of: we want to feel happy. Deep down, there is an emptiness in life we want to fill, so we continually seek fun, pleasures, and security throughout our lifetime. But true happiness is never found this way until we know that we can be happy for all eternity. This is exactly why true Christians feel completely fulfilled and happy.