Couples in a long term relationship often find their life interferes with the plans they made years ago, and they may suddenly find that what they thought they wanted their life to be is not what they really need. They can get frustrated when they realize they have been working toward a goal that will be an empty victory, or they can make new plans. Recreating the future together can be a way for them to deepen their bond, and it can also be a way for them to salvage parts of their life while setting new goals.
It might seem as if this bump in the road would be one that could derail their relationship, and it does do that to some couples. They see their life together as a failure, and they decide there are other people who might fill the emptiness they have just discovered. Others will find that working together for a new and different future will make them even happier as a couple.