Steph,

It is important to remember that you cannot parallel homosexuality and eating shellfish. Christian condemnation of homosexuality is grounded in creation ethics. Within Christian discussion, the creation continues to be solid ground for determining what God wants. Just look at Paul's appeals to the creation when he limits the options of women in the church, or later patristic vs. gnostic arguments over the goodness of the creation. Eating shellfish is not part of creation ethics and, like so many other Levitical laws, it is seen as having ended its purpose in the post resurrection world.

I agree with you that homosexuality should be seen as an acceptable option when it comes to issues of state marriage. However, I do not think Christians are inconsistent within their religion for believing homosexuality is immoral while also ignoring other non-creation laws such as eating shellfish. Of course America is not, nor ever was, a Christian country and so I understand that you would object if specifically Christian ethics concerning homosexuality are pressed onto everyone. I share that concern.