Well, I think you should be aware of the extreme difficulties in actually deciding when and how to do this. I think there's little evidence that shows that doing it this way or that way, or defining some kind of arrangement between two people, will sort out the problems.
Life is difficult, and things don't always work out the way that one plans. I think it's knowing, as Dr. Thorpe very ably pointed out, that life is complicated and things are challenging, and it's not easy to do this.
There are a lot of risks, and the benefits are hard to measure, so I do not believe it's in the best interest to enact this kind of legislation. I think it's very problematic.