I disagree. Marriage is still necessary to protect the ability to raise kids. Group health ins, shared retirement, etc.
It may not be fashionable, but protecting the environment to raise kids is still necessary.
Marriage is union of one man and one woman. Male and female were created to form one since the time of Adam and Eve. Eve was created from Adam’s rib. Women were created to be the helpmate for men. The Lord continues to make wives as the helpmate for the husband to this day. A man may not find the woman who is his helpmate because we do not seek the will of God when we marry. A man and a woman who are one in Christ can have relations from time to time as an expression of love for each other. Children do not always have be the result of intercourse.