Does married life require a greater purpose beyond just to loving each other?

It is having a person who is committed to you, to your marriage, and to helping one evolve into the best person one can be. It is learning about life. About each other. About having someone to back you up and to help you grow. Love is the greatest force on earth. If you find someone to journey with you, and you both work on it, you have the best life. Otherwise, you journey alone. That is also a valid option.