"Proposition 8 serves no purpose, and has no effect, other than to lessen the status and human dignity of gays and lesbians in California, and to officially reclassify their relationships and families as inferior to those of opposite-sex couples."
Yeah, I think that's really it. I mean, Proposition 8 was also (like so many movements against Gay Marriage) an attempt to rally conservative voters to the polls so they'd also vote in the best interests of the G.O.P. pro-business agenda. But as a social force, Prop 8 was just some folks wanting their government to decree that gays aren't people the way straights are people.
Most of my right-wing acquaintances have turned loose of this issue. They've realized the argument that Gay Marriages threaten the hetero kind is a hollow position that requires double talk about tradition and procreation, even though procreation isn't exactly on the menu for same-sex couples. At the very least, most one-time opponents of letting gays marry seem to recognize that it's a losing position…and sometimes even that neither the world nor "conventional marriage" are ending in states where such unions are recognized.
I still wish this thing could be settled by a vote of the people rather than to reopen silly arguments about "judicial activism." If they put a repeal of Proposition 8 on the California ballot this November, it would pass.