Now that gay marriage is the hot topic sweeping the country, I've been trying to formulate my own arguments against it.  As a Bible-believing Christian, the moral argument is the easy one.  But moral arguments are not going to get me very far with, at best, amoral people.  So, I'm looking for more practical arguments against gay marriage.  Let me know what you think.  Even if you think that there are no practical arguments, only moral ones.