But it doesn't if you accept the idea that marriage is about procreation, since homosexuals cannot procreate from within their relationship.
As far as the church acceptance of civil unions, perhaps it is a combination of several factors: 1) treat others as you would have others treat you (meaning you leave me alone to worship as I choose and I'll leave you alone to join as you choose, as long as we stay away from each other), or 2) homosexual infiltration of the clergy.
-PJ
But men with vasectomies are allowed to marry. The issue is not even considered.
Shalom.