Why only couples?
Why can’t I marry my sons?
I’m not interested in having sexual relations, I just love them so.
Not far enough.
The dogs. Why not betrothal to your best friends?
It’s inter-species discrimination to interfere with your Civil Right to marry the Pomeranian of your choice.
Actually might be a reasonable way to avoid the inheritance tax. The last surviving spouse marries their children and their estate passes along without the Fed's stealing their portion.
I'm sure this hole will be sealed shut (can't deprive the Government of their stolen money), but it shows where this absurd destruction of the sanctity of marriage leads.
My mother's family was a typical early 20th century farm family, which had twelve kids. In their declining years, several of the spinsters and bachelors moved back to the farm to share expenses. Why could they not be "married" so they could retain rights as joint tenants?
By the same "arguments" advanced for homosexual "marriage" they were denied equal protection of the laws by being forced to remain single. And there was actual harm, since there were increasing inheritence burdens that they had to pay.