I was a 50/50 kid. My parents got a long well and lived close together and I still hated it. My mom today admits that it's for the benefit of the parents, not the children to do it that way. I'm sure there are lots of people who do this and it works really well for them. I'm just not one of them.
I'm so sorry to hear that Gmum and I can totally understand you hating it. I know I would too and that is why I don't want it for my children. I think it is completely selfish of adults to do this to their children (no offence to your parents or anyone else). As I said, now as an adult I wouldn't want to live in two different houses and live out of a suitcase all my life and I don't want it for my children. It breaks my heart.