The blood-line is everything.

Marriage is for the shepherding of Children.
The marriage partners sacrifice their individualism, self-determinism, and self-will
for a period of 18 - 21 years depending on the maturity of the child or children involved.
The genetic line is everything.

Persistence of a partnership afterwards is a matter of personal choice,
albeit that the commitment to grandchildren and the genetic line continues until, and beyond death.
The genetic line is everything.

The purpose of religious solemnisation of marriage
is the giving of oaths surrendering to the life sentence of reproduction.
It also acknowledges a time&space commitment to the new blood line the partners add.
The genetic line is everything.

Those who do not reproduce may advance God's bride-intention
by their primary commitment to assisting the shepherding of children of their blood,
and their secondary commitment to assisting the shepherding of children of other genetic lines.
It is a roving brief under discipline.

All questions of morals; sexual or intellectual,
may be decided by referring to the above paragraphs
without further interpretation.
Nothing additional is cogent.
The blood line is everything ; beginning, middle, and end.