The public voted overwhelmingly for no gay marriage. A judge overturned this for activists who aren't content with just working out contractual agreements on the side like rational people. Therefore you have taken away the will of the people and supplanted it with activist special interest. People don't LIKE that when their vote is nullified by an asshole judge looking play social engineer because they feel entitled to.
It will be interesting IF it turns out SCOTUS bans gay marriage nation wide though. Willing to accept THAT decision too? The majority of Americans, particularly minorities would rejoice their will would matter.