I know a few people in my age group who have had to cut off or limit contact with their parents. None of them made the decision lightly. It’s not done because it’s a “trend” or as a form of self expression. Think about it, no child would voluntarily orphan themselves. As adults that’s the last thing we want to do either, particularly those of us that are parents ourselves, why would anyone limit contact between grandparents and their children unless they felt there was no other option?