Your stated reason for opposing gay marriage is that it involves tax deductions because children are an expensive commitment. Then, in the very next sentence, you say you don't support gay adoption. So you oppose gay marriage because they can't have the kids you want to keep from them?
Let me guess: You don't support gay adoption because gay parents can't afford it, what with not having marriage-related tax breaks?
Let me guess: You don't support gay adoption because gay parents can't afford it, what with not having marriage-related tax breaks?