Gay marriage should be legalized In the United States

Contention 1: Overpopulation Here's a fun fact of the day! If the entire world population had the same amount of living space as New York City then they would fit into Texas! (http://www.realclearscience.com...)See this means that we aren't overpopulated it just shows that us as humans are just really just spread out. In an article by Time we can see that the world's population is actually decreasing not increasing. ( http://newsfeed.time.com...) Doesn't look like you believe me. Many nations that have high female financial independence look at Europe. Their childbirth rates are actually lower than the death rates! The US has actually reached it's lowest all time as the US birth rates are falling. US birth rates are down 8%, foreign births are down 14%, and Mexican birth rates are down by more than 23%! (http://www.pewsocialtrends.org...) So it looks like the Earth is not overpopulated.Contention 2: Homosexuals should not get married.First let me give you a Bible verse that is against the Bible.Leviticus 18:22, "Thou shalt 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 lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them."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. (http://www.americancatholic.org...) 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.Contention 3: Civil UnionsNow I know my opponent will probably bring up that I don't want two people that love each other together, but that is false. I as fact have two homosexual uncles, but am still against Gay Marriage. I instead support Civil Unions. What are Civil Unions you may ask? According to Merriam-Webster Dictionary, a Civil Union is a legal relationship between two people of the same sex that gives them some of the same rights and responsibilities that married people have. (http://www.merriam-webster.com...) Now reading this you may ask yourself why are you against gay marriage then? Simply for the reason stated in Contention 2. Let me show you it's effectiveness. New Jersey and Vermont both have legalized Civil Unions instead of Gay Marriage and they give you the same exact right as a married couple. Here's who can enter a Civil Union. the same sex over 18 years old (or meet requirements for an exception) not a party to another civil union, domestic partnership or marriage not closely related to each other (for example, not an ancestor, descendant, sibling, niece, nephew, aunt or uncle) (http://www.lambdalegal.org...) Also according to Pew research Center, 57% of Americans approve of Civil Unions (with a 37% oppose) while 53% of Americans oppose Gay Marriage (37% favor). Here are the support numbers between men and women. Men Civil Unions: 54% for 40% against, women Civil Unions: 60% for 35% oppose, Men Gay Marriage: 34% for 59% oppose, Women Gay Marriage 43% for 48% against. (http://www.people-press.org...)