DH hates the idea of separate finances, not only within the household but also with his parents. They live on another continent but their money is ours and ours theirs, there is no distinction on who pays for large purchases/flights to visit each other and any other expenses while travelling etc, meals out, holidays etc. I’ve gotten used to this over the years.
However we now have DC who, via my side of the family, have been exposed to the idea of having their own money. DH hates the idea of ‘my money’, even inter-generational. And strongly believes as an extended family everything should be shared and it’s all collectively ‘our’ money (richer or poorer..).
He wants DC (7 and 5) to be taught the same principles but I think this may be difficult.
By contrast my parents have separate finances, bank accounts, I grew up with my own pocket money etc.
DH doesn’t mind DC being given cash (though he’d prefer not at this age) but he doesn’t want them to think it’s theirs alone and they should be happy to share it with the family.