Gay Marriage

I always believed Gay Marriage should of been legal, simply because it's a gay couples right to take the benefits of "marriage" as defined by the government. The government doesn't have the power to say that a marriage is defined as the relationship between a man and a women, because doing so is a direct violation of the establishment clause of the 1st amendment. Gay people still are almost the exact same as heterosexual people, and should not be denied the benefits of marriage because they don't have the same connection to the opposite sex as the straight population. What authority does the government have to deny the rights of its people. People may say that legalizing gay marriage would destroy the sanctity if marriage as is was back in the bible days, but it would do no such thing. Is marriage really the same as it was 2000 years ago, when nowadays around 50% of married couples get divorced? Is it the same when the legal benefits are reaped for the good of the women, making men pay absurd amounts of money to avoid getting sued for more? The point of marriage back in the day was to make a relationship, where a child could be nurtured, and have a decent chance of succeeding in the world. Are parents really different if they are comprised of a man and a man, as opposed to a man and a women if they care for their child. Marriage has become about money, so why should gay couples be stifled on the legal aspect of marriage, if they care for a child equally to a straight couple.