You keep referring to it as a "registration" as if someone is registering a car.
That's not the case. It's called a marriage license. In other words, permission. When the marriage actually occurs, the license is signed either by the Court Clerk (courthouse wedding) and clergy (church wedding). Some states do discriminate with regards to who is allowed to marry. That is not the case with things like drinking laws.
Drinking laws apply to all those under the agree of 21. Everyone, regardless of sex, or sexual orientation or race, etc.
In the modern era, do you know anyone who applied for a marriage license (many states call it a certificate) and were denied that met the criteria? You know, not too young, not already married to someone else...etc.? The state could not/would not/had no authority to stop you from being married, or even registering your marriage, so long as the criteria were met.
It is no measure of health to be well-adjusted to a profoundly sick society.
Marriage laws are the same. Everyone, regardless of sex, sexual orientation, race, etc. could marry anyone they chose so long as that person was not too young, not too closely related, of the opposite sex, and neither of you were already registered as married to someone else. EVERYONE had those restrictions, exactly the same. Many homosexuals married, they just married someone of the opposite sex.
This kind of word game is what required the fixing.
"I've learned that pleasing everyone is impossible, but pissing everyone off is a piece of cake"
Ok, so no analogies. Tell me where there is a sexual orientation clause in any state (or was at the time of the SCOTUS decision nullifying the tenth amendment) and I will concede you are correct that homosexuals were not allowed to marry as opposed to same-sex couples were not allowed to register their relationships and get the perks and disadvantages. Fair enough?
They just can't marry each other.
Life is too short to pretend you don't like being choked during sex.