What are the legalities of a same-sex partnership? What are their rights under the law? And should they be legally recognised?
Any thoughts?

Their rights under the Law are fluid and can be changed. Morally and medically, they should never be allowed.

It's just unnatural. Once this is allowed, what next? Pressure groups lobbying to legalise bestiality? Pedophilia? Give an inch and they'll want a mile.

Mixed marriages (between blacks and whites) used to be illegal for the same sorts of reasons that same-sex marriages are illegal today. And same-sex marriages will become legal for the same sorts of reasons that mixed marriages became legal. Reactionaries cannot only protest against change for so long. Progressives always win in the end, usually once we have public opinion firmly on our side.

And Jack, the key is informed consent. Animals and children can't give adequately informed consent towards marriage.

However, my children may well live to see humans and robots allowed to marry, depending on what sort of AI breakthroughs occur.

The agreed marriage of a male to a female has always been natural and for that reason alone it is eternally legal. Nature demands such for procreation. Any other sexual arrangement is deviant and unnatural. Such deviant acts has with it social disfunction and poor health consequences. Hetrosexual marriage is based on natural science unlike same sex marriages based on the emotions of sexually disoriented minds.

Questions?
What does the law say now that prevents or impedes Homo's from what I read they want?
I don't see this as a moral debate, but a citizens right, to be treated in law the same as if he/she of other beliefs.
Bigots abound, lets stick to what is wanted?
fluff4

Actually Philo all the available evidence points to humans being naturally serial monogamists. There's an obvious benefit in forming stable relationships for the purposes of rearing children, but outside that, people choose to publicly honour their commitment to remain together for all sorts of reasons. A very significant percentage of heterosexuals marry with no intention of having children, and clearly nobody is going to deny them to right to a legal marriage.

And for crying out loud, what are the possible "poor health consequences" of a legally recognising the decision by a same-sex couple to commit their lives to each other?

In 10 years' time we will look back to 2007 and ask "can you believe same-sex couples weren't even allowed to get married back them?".
And marriage as an institution will all the more stronger for it.