I am undivided in my happiness for all those who can no longer be denied recognition by either state nor government for their commitment to each other solely on the basis of something as unrelated as their gender.
In my personal view; when marriage is brought to a state or federal government, it is brought not as a religious matter to be ruled by God through government, but as a matter ruled by man through law. And as a legal matter marriage is a contract specific to, but not requiring anything more than, two consenting and legal adults.
As for the children.
I have found convincing evidence for children being hurt by their parents staying together in a loveless marriage; as I have for children being hurt by intolerance towards loving parents.
In neither case was the gender of parents the cause.