Because OUR government was founded on Christian principles. It's based not only on those principles, but on historical and natural law principles as well.
Again, homos can't re-produce. That is the crux of the argument regarding marriage. Without marriage and children, our population would age rapidly with no replacements.
Also, even if government didn't define marriage, homos would still sue to be allowed to marry in churches and by people of faith. It's never enough with this people. Nobody is stopping them from being with the person(s) they "love."
It's not OUR government anymore, in case you hadn't noticed.
I really hate to tell you this, but thousands upon thousands of homosexuals have biological children. It can be from a marriage to a straight person, it can be through artificial insemination, it can be from a surrogate. Shoot, homosexuals can be sperm donors and have hundreds of offspring. So they are busy procreating every day.
Without marriage and children, our population would age rapidly with no replacements.
No, without children our population would age rapidly with no replacements. Marriage is not necessary for procreation, for either heterosexual or homosexual couples.