Kissak and Mishka, the pain is there because it was real. It was not some figment of your imagination. People feel the joy with their spouse because it is mutual. We "feed" of each others emotions and we usually react, good or bad.
Personally, I would still take the pain of what has happened over never experiencing the happiness I had with my wife for over 20+ years. I do believe that eventually things will work out for the best but if I was to know that my last day living under the same roof was Nov 27, 2006, I would still choose to have married her in 1990. Too many positives were experienced to wish she and I never happened.
I believe most people who easily move on to the next person more as a band-aid to help them overcome the hurt they feel. I just don't want to add more "pain" either to myself or to another person to salve my injury.
Me:56, W:51 D:26,S:24,S:22 Married:18 Bomb 9/27/06 Separated 11/27/06 Divorced 10/6/08 Leaving it up to God