Gay people have the right to marry as much as heterosexual people have the right to marry.
I mean a man and a man marrying, or a woman and a woman marrying. Not the absurd idea that gay people have the right to get married as long as they marry someone of the opposite sex. I have seen that stupid idea proposed before. It's ridiculous and asinine.
What people want to do is change the definition and institution of the word marriage
Marriage is as you said, an institution, it's basically a legal contract between two people. Saying that two people who love each other getting married is not a family is narrow minded. In a same sex marriage, you would still have a mother in law (or two) a father in law (or two) siblings in law, extended family. The idea of procreation between the bonded pair is irrelevant to the definition of family.


