it's just, that, what exactly ought a marriage mean to a secular person?
we don't talk about gay baptism, for example, although...well, i guess maybe we do, but it means something else. i think a bathhouse baptism might be a lot of fun.
but, baptism as a ritual just seems silly to a non-religious person. why doesn't marriage seem equally antiquated of a notion?
and, the answer is those benefits in the real world, which should be available to people, anyways.