As to the first, tell it to Elton John (who recently had a child by surrogate with his husband) and a whole lot of other people in the same boat. Now all we have to do is find a way to nullify marriages where the man and woman couldn't, or decided not to, have or adopt children.
As to the second, others disagree. On the issue of "majorities," please note that anti-miscegenation laws were struck down by the courts at a time where neither public opinion nor legislation would have ever accomplished that goal.
BRUCE L. WILDER