Well I think I understand where you are coming from. Yes it will help if truly they compromise and make sacrifice. if only one party is sacrificing in a relationship it will get to a point where he or she will not be happy. Compromising in a relationship helps the couple to get along easily and happily.

I need to add that there are other important thing that still need to be considered. Trust, Understanding, respect and honesty. All these will work to help the relationship. Without all these put in place there will be no happiness even with the plan for kid.