Now, I'm not saying to live without responsibility. But we should live without regret for things that made us happy at the time. Everything we have done had a purpose and at that time in our life it was all we ever wanted and could hope to have. Why would you regret something that made you feel complete, even if for all the wrong reasons. For a small moment it made you feel...something. To feel something, good or bad, is infinitely better then being void of emotion and being numb and cold to the world. Everyone is entitled to Live, that is our basic Human Right. Why should anyone deny a Human the right to Live.
We must not cheapen this precious gift. By worrying and brooding for the terrible past or what could have been. We need to learn to forgive and forget. It is hard to forgive another human but is equally difficult, if not more so, to forgive ourselves. But we can not move forward in our lives without learning to Forgive. A human can not hope to live a happy life knowing that forgiveness is due in some area of his life.
Again, I am NOT saying live without responsibility. Every Human is responsible for his own actions, words, and thoughts. You must take and treat that responsibility with respect. Everyone is Human, therefore everyone deserves respect just as you yourself deserves respect. If everyone was given the respect they deserve...oh how we could change the world! If everyone was treated like the Human Being that they are, I know the world would change for the better. If everyone could just let go of the past, of some one's failures, and just realize we are all Imperfect Humans, the change we would bring about is beyond what I can imagine. The hope we would have as a Species is immense.
Sadly, I know that none of this is completely possible. Because of the simple fact that we ARE Imperfect Humans.