Reconciliations can and do happen. Those that urge people to move forward are not being negative, they are just offering the idea that the solution might be another person and another circumstance.
If a couple breaks up and one of them longs for a reconciliation that never happens, yet both one day move onto new and happy relationships... how is that a bad ending? What is helpful on this board is having a forum which allows one to vent and receive encouragement. Often times, the person who is dumped clings to the wreckage of the relationship for far too long. They stay in contact, pursue the other person, continue to call them and try to get back with them. They are the absolute last person to finally "get it". Once that hurdle is over, they can heal, apply the lessons learned and move on to a happier match.
Relationships can be for a reason or a season. People outgrow their relationships or one party betrays the other. The easy thing to do is to stay frozen and longing for the past. I think that is why so many cautionary postings have been placed on this "happy" thread. It can happen, sure. But sometimes, the absolutely right thing to do is move on. Life has one direction - forward.
Most people have the most difficult time facing the hard truth and making the move in a NEW direction. Reconciliation is a dream that is clung to for far too long in many cases. It often times is not a good idea and delays the healing that is long overdue.