The state requiring licenses is a relatively recent phenomenon. And regarding marrying your sister, incestuous relationship tend to involve coersion and abuse.
And besides, incest (depending on degree and in which state) is illegal.
But it is required, when challenged, to justify discrimination. If it cannot show compelling state interest, then the discrimination is unconstitutional.
Irrelevent. Whether or not that's true, the case is they exist now.
Irrelevent. The state cannot restrict privileges or rights without due process, meaning the state has to have a compelling reason to restrict privileges to one group.
That may be, but their rulings still set precedent until otherwise overruled. How does that change my point?
Seven of the nine Supreme Court Justices were elected by republican presidents.
Six of the seven Justices on the Supreme Judicial Court in Massachusetts were elected by republicans, including Margaret Marshall, the chief justice and the person who wrote the decision on the Goodrich v. Dept. of Health case, were appointed by Republican governors.
But when all else fails, feel free to blame the liberals.
Whether or not the "masses" accept it is irrelevent. The definition has changed of the centuries.
Then why bring it up at all. YOU were the one worried about definitions, not I.
The bible is irrelevent. Marriage was not a religious institution initially.
Separate but equal is unconstitutional.
I'm sorry. Are you a constitutional scholar?