Gay marriage should be legalized In the United States

My opponent mentions at the beginning of his round 2 arguments that I haven't addressed his points yet. This is because the debate structure prevented me from responding to his arguments in that round. If I had responded, that would have both violated the rules and would have given me an extra round of rebuttals. I just want to make sure everyone on the same page with this.I'll address Con's contentions first then I'll defend mine.The world does not have a population problemCon provides some statistics on the world birth and death rates. He doesn't have any conclusion to this argument, so what the actual point is remains unclear. If he's trying to argue that gay marriage should not be legalized because the population is already decreasing, then the argument fails due to homosexuals not having children regardless of whether they can get married or not. They wouldn't have an effect on the population. Homosexuals should not get married because it goes against various religions"First let me give you a Bible verse that is against the Bible.Leviticus 18:22, "Thou shall not lie with mankind, as with womankind: it is abomination." An abomination is anything that is disgusting to God.Leviticus 20:13, "If a man also lie with mankind, as he lithe with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.""Con's verses don't advocate against gay marriage, rather they advocate against gay sex. These are obviously two different things, banning gay sex is an entirely different debate. "Now I state that homosexuals should not get married, because it is against many different religions and we can all agree that marriage is a religious Sacrament where that the church says it is between a man and a women"Con's source for this is a page on AmericanCatholic.org describing the seven Catholic sacraments. When we look at the section on marriage, it merely says:"For Catholics, the Sacrament of Marriage, or Holy Matrimony, is a public sign that one gives oneself totally to this other person. It is also a public statement about God: the loving union of husband and wife speaks of family values and also God's values"The words "for Catholics" limits these lines to only those who are Catholics, not everyone in the US. The bible is not the law of the land. "Now the US has the Separation of church and state, so my point is that the federal government should stay out of a religious affair as it has no right to intervene"Con now claims that the US government would be violating separation of church and state if they legalized gay marriage, while the exact opposite is true. The First Amendment to the US Constitution forbids entanglement of religion with the state: "Congress shall make no law respecting an establishment of religion [1] Laws must have a secular purpose, not a religious one. Limiting marriage to heterosexuals for religious reasons obviously violates this, as it is saying that because a religion is against gay marriage, it should be illegal. The separation of church and state directly prohibits religion affecting laws. It isn't as if gay people getting married are somehow restricting a Christian's ability to pray. Civil Unions over marriageIn many locations where two-partner unions exist that aren't classified as "marriage" the actual set of rights, responsibilities, and privileges associated with those unions falls short of those recognized in marriage. For example, in New Jersey, one of the examples my opponent had brought up, civil unions have failed in guarantying gays rights. [2] There isn't any reason to keep this going, and legalizing gay marriage would prevent this from happening as companies wouldn't be able to find loopholes. "So if they are the same in that term then what makes legalizing gay marriage any better than a Civil Union" Calling a two-partner union a "marriage" for heterosexuals but a "civil union" for homosexuals is like the failed doctrine of "separate but equal."Thank you.[1] http://www.law.cornell.edu...[2]http://blog.nj.com...