From a commenter on
this metafilter thread (thanks
quigonejinn), emphasis mine.
I wish we could separate religious marriage from legal unions. Give people all the rights and benefits of marriage, but make the religious aspect something akin to baptism or confirmation: a ritual that has no ramifications outside that religion. Then people could discriminate against whomever they wanted in their place of worship but would have to act like fucking grown-ups the other six days of the week.