What follows is a frank discussion about the Catholic view of sin. It can be painful to engage in such a discussion. If we are honest, we are all involved in some aspect of sin. Thankfully Christians have a way out of the destruction, guilt, and misery which sin inflicts on every sinner.
Sin is insidious. The victim of sin often is barely aware of the state of his or her soul or even mental health.
Although this is about the Catholic world view, the destructiveness of sin applies to other Christians and non-Christians equally.