Nature abhors a vacuum, and it is only after a space is cleared that there is room for new plantings to easily take root. A person who is going through a divorce must also mourn and clear their internal conflicts before there is space for new love, trust and joy. Most people enter marriage filled with hopes and dreams. Often these dreams have been with them since childhood. While realities can be buried and mourned in a concrete fashion.
Dreams are ephemeral and tend to die a slow death.
There is no safe place, no box, to neatly tuck away a long cherished wish or dream. Generally, divorces end the same way the marriage has gone. If the marriage has been built on bitterness and anger, the divorce will probably be a long drawn out, angry and often financially and emotionally costly affair. If there are children involved, chances are you will remain in each other's lives forever. It simply makes sense to divert your emotions away from your ex or soon to be ex-spouse and vent your unhappiness to a good friend or a professional.