…marriage is Submission.

It is a kind of "legal" guarantee that the woman has so that the man only produces for her; the intention is to limit the procreative instinct of man.
This is also how, in case of an unwanted pregnancy, the woman can evaluate the situation and decide whether or not to kill the child, but the man does not have that power of decision, being under the "legal" framework once again subjected to the woman.
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