Will the future marriage system disappear?

No, as long as it is a country ruled by law, it will not disappear.

Marriage system is a code of conduct that a particular society requires its members to abide by in marriage. It is stipulated by social customs or laws. The sum total of customs or legal provisions that oppose people's marriage behavior constitutes the dominant marriage system in this social form. The marriage system is determined by the economic base of the society, and is built on the economic base. In class society, it reflects the will and interests of the ruling class. There are three main marriage systems in human society. (1) group marriage. (2) the system of even marriage. (3) Monogamy