Just read this article and it saying that there is the possibility (not set in stone blah blah) that they will be giving co-habiting couples the same rights on break up, as married couples. Now I'm sure that in plenty of cases, there are people who have lived together for 20 years, without getting married, broken up, and been royally screwed when they had no more rights that the neighbour, to a fair settlement. Doubtless all those people will leap on to tell me their story and proclaim IABU.
However what I'm thinking is that in GENERAL (cue flaming) you date someone, you like them, after a year you think yeah I could live with them, give it a shot living together, it works out, you maybe get married voilà . But if it doesn't work out, you can walk away because phew you didn't actually tie the know.
If this new law comes in then suddenly when you move in together you are making the decision at THAT stage that this person may be eligible for half your worldly goods. When I moved in with my DP (hopefully one day DH) I was in love, I was hopeful for the future, but I don't think I'd have wanted to necessarily commit to him definitely having rights over my flat/business/savings. If I'd felt that certain I'd have married him, not moved in with him.
In my mind marriage, and just deciding to give it a shot and move in are two very very different steps and should be treated as such.
(dons hard hat from people who have co-habited for years and are in the anti-marriage brigade)
Discuss ;)