skarekrow13 wrote: the definition in many people's minds for this term doesn't reflect the religious background, only the legal.
You're forgetting that most laws originated from religion, and marriage is one of the prime examples. The legal definition IS the religious definition.
Still though, your debate is different from mine, as the U.S is secular they have no obligation in their laws to keep to religion, whereas Britain does, hence why marriage will never be a catch all term for hetero and homosexual marriage.