I simply point out that many people and the number are discriminated against.<quoted text>
Again, marriage is a fundamental right of all persons. This is a fact of law. SCOTUS: Turner v. Safley, 482 U.S. 78, 95 (1987):“The decision to marry is a fundamental right”
Your desire to make it a privilege is not supported by the law. There is no requirement for procreation or even sexual activity or ability, therefore the gender restriction provides no legitimate governmental interest.
However, at its most basic essence and anything there after, marriage is distinct from SS couples.