And what about “need?”
You love your kids, but suppose one is financially well off, but another struggles to make ends meet and provide for his or her family?
I’d still be inclined to split equally. Why punish the kid who succeeded? Why reward a kid who maybe struggles because he/she made bad choices? I get it that there are lots of circumstances that cause people to succeed more or succeed less. Some of it’s luck, some is genetic, some choices. But I’d be reluctant to give or leave one kid more than the other. If a wealthy child wishes to disclaim his/her inheritance in favor of a less wealthy sibling, that’s his/her choice. It’s not going to be mine.