What's wrong with one sibling stealing a parent's accumulated wealth while they are still alive and not leaving it for the other siblings? Quite a lot.
The number of otherwise good people I've heard refer to "their money" when actually referring to their parents' assets is heartbreaking.
Exactly my point. I understand what you are saying - but in conversation, my reaction is much more like the parent comment, it sounds like an entitled POV. Many people who say such things, in my anecdotal experience, feel they have a right to the wealth, and may not have agreement.