Why can't we legislate for couples who want something other than marriage but want protections too? Of course, we can, in the form of civil partnerships, but they're only for gay couples (so far anyway, although I wait in hope).
What do you consider to be the benefit of a CP over civil marriage?
Adultery can't be used as grounds for dissolution of the partnership, but that's because CP were born of a homophobic attitude to refusing to grant gay couples full marriage equality - and because British law only recognises sex with someone of the opposite sex (and not someone of the same sex) to be classed as infidelity (in both marriage and CP)
What's the material difference that CP offers?
Marriage had historical patriarchal baggage - but is now available to same sex couples
CP has very recent homophobic baggage
We come back again to the 'branding' issue. Is it simply the word 'marriage' that's the issue? Because I'm missing what the substantive benefit of a CP contract vs a civil marriage contract is, other than the name