Great question! I believe we are gradually turning into an era where the people (mostly women) who were upholding marriage are now conscious and self-reliant. Considering that the institution of marriage was solely meant to be controlled by men and they benefit more from the relationship. So maybe we are approaching post-ignorant society, where women are no longer accepting the bad culture that has made them submissive to men in marriages where it isn’t companionship for them. So the problem is not as a result of the institutionalization of marriage by religion- because as the case may be the guidelines of marriage which are being followed by society are very little from the teachings of the religion but culture- the problem is that people are not accepting the toxic conditions that they used to live with, and this is what is affecting the way we live now.

Also, I think mother-daughter/son or father-son/daughter are institutionalized relationships as well. This can be backed by a child’s birth certificate, it is a signed relationship. Also, brother-sister relationships are signed when they are your next of kins, that’s to an extent an institutionalized relationship.