I believe the States should have the right to determine what laws they should be allowed to follow.
However, I disagree with your notion that government should be allowed to enter anyone's bedroom and dictate, under penalty of law, what a person can or cannot do in their homes. This is not a Conservative stance and smacks of tyranny.
Either you are for limited government, or you are not.
How does not expanding the governments power to regulate same sex relationships allow the government to dictate what a person can do in their homes? By not recognizing same sex relationships as marriage, has the government prevented them from doing anything they want sexually?
Yes, it has.
However, there is a much simpler solution. Simply do away with government recognized marriage all together. Civil contracts can do everything that current marriage law does, without the emotional blackmail and governmental oppression.
Marriage is essentially a Religious Institution. People can get married in church, and if they can find a church to marry the same sex, more power to them.
However, religious marriage would not be recognized by the government for anyone. Only civil contracts.
I don't really need any government to tell Me I am married, so I could care less what others, the government, or even God thinks about it.