Ultimately, the wisest course for anybody who's afflicted with same-gender attraction is to strive to extend one's horizon beyond just one's sexual orientation, one's gender orientation, and to try to see the whole person.

If you have some legally sanctioned relationship with the bundle of legal rights traditionally belonging to marriage and governing authority has slapped a label on it, whether it is civil union or domestic partnership or whatever label it's given, it is nonetheless tantamount to marriage.

If I'm one that's afflicted with same-gender attraction, I should strive to see myself in a much broader context... seeing myself as a child of God with whatever my talents may be, whether intellect, or music, or athletics, or somebody that has a compassion to help people, to see myself in a larger setting and thus to see my life in that setting.

It's not the Church that has made the issue of marriage a matter of federal law. Those who are vigorously advocating for something called same-gender marriage have essentially put that potato on the fork. They're the ones who have created a situation whereby the law of the land, one way or the other, is going to address this issue of marriage. This is not a situation where the Church has elected to take the matter into the legal arena or into the political arena. It's already there.

There are numbers of different types of partnerships or pairings that may exist in society that aren't same-gender sexual relationships that provide for some right that we have no objection to. All that said... there may be on occasion some specific rights that we would be concerned about being granted to those in a same-gender relationship. Adoption is one that comes to mind, simply because that is a right which has been historically, doctrinally associated so closely with marriage and family.

This notion that 'what happens in your house doesn't affect what happens in my house' on the subject of the institution of marriage may be the ultimate sophistry of those advocating same-gender marriage.

In this life, such things as service in the Church, including missionary service, all of this is available to anyone who is true to covenants and commandments.