Okay, serious answer, hope you forgive the wordiness!
I’m against it because humans in this artificial age are already becoming mentally ill from being isolated, which is emphasised in the recent lockdowns, but primarily from the increasing number of single people, who for one reason and another never marry or have kids, and wash up on the shores of their early sixties with not one living soul: apart from a few old work friends they never see any more.
Throw in something like this current lockdown and it becomes intolerable, now all the family-surrogates, like pubs, gyms, nail bars, whatever, are out of reach. But that only shows the reality that was there before: that solitary confinement is a punishment in prisons for a reason.
The illusion of the “cool urban family” of friends and colleagues, à la Bridget Jones or Sex & The City, seldom holds up much past 55, due to moves out of the area, other people’s commitments to their own families and kids, etc.
I know a great many people who are in that stage of life, or close to it, both male and female, gay and straight, and NONE of them feel like they’re living the dream any more.
So, this self-marriage fad is part of a movement into an even worse version of that atomised society, now that relationships have become politicised to a degree that trust is completely falling apart. I won’t expand upon that, because it will go way too far into “identity politics” territory to be forum-legal, but it’s affecting everyone in some form.
Self-marriage is yet another modern fad that gets in the way of healthy relating to people outside oneself, it hardly seems likely to lead to long-term happiness, or the creation of healthy families of any kind, let alone raising stable and responsible children.
Why should that matter? Because we may be spirits having a physical experience, but we ARE having that experience, we’re not spectators, and it behoves us to think of other spirits-made-flesh in the future, and try to create the best world possible, for them. We inherit rights and evolution from our ancestors, and we owe our descendents the responsibility of handing those on.
Right now the people having large strong families, which also models how to do that for the next generation, are THE most doggedly religious people out there, and it is to them that the future of this planet will belong, in 60 years’ time.
Being single is great when you’re young and pretty, and making social media posts about it, not so cool after about 55, 60, or 70, when there’s no-one there, and by that point, probably never will be.
One could do that with a ritual bath, though?
If someone’s had their heart broken, but does want to be loved, they need to leave room for that love to come in, not totally close down.
There is a principle in Law of Attraction to start making sure to sleep on just one side of the bed, and start making room for new love, just like you make room for anything else you’re trying to attract.