Because whatever the problems that you have based on circumstances, based on two different egos, because the ego is such a thing that when two egos are living so close to each other there sometimes has to be disagreements, conflicts, it is natural.
But they are not important.
What is important is the sacred principle of why we are together, as partners in life to help each other to become pure. To help each other to practice yoga, the yoga of life.
The higher principle is to help each other to love God, to help each other be instruments of God’s love for the world.
If that is why we are married and to love and protect each other for that purpose, then nothing else is important.