I find your answer odd, coming from a self described "very liberal".
Why should the government be involved in the bedroom? That is the real issue here. For some time, same sex couples have been allowed to cohabitate and to call themselves married. This ruling really concerned the special rights given to governmentally approved marriages by the government and the "equality" that these special rights should grant. But think about this. As currently defined, marriage is based on a basically Biblical belief that sex between 2 individuals is so special that it should be only done by adults in a long term loving relationship. And because it is so special , government grants these couples special rights. How archaic is that?
Before, only hetero couples got these special government issued rights. Now same sex couples do as well. And, as we approach 50% of the adult population being single, many for life, where is the equality for them? Why are special rights given to people who subscribed to the Biblical idea that sex should only be done between 2 people in a long term, loving relationship? What about asexuals, non-sexuals, polygamists, polyandrists, and, most importantly and the biggest group, the people who do not prescribed to the Biblical ideals and are content to have a variety of short term non committed sexual encounters?
Keep government out of the bedroom by ending all government issued benefits based on this religious concept. The value of "marriage" is from the participants themselves and the esteem in which they hold marriage. No government special benefits need to be required.