I think it really depends on each individual family and their circumstances.
For example, I’m in my 30s, parents in their 60s.
When my grandad died, he left all his money to mum and dad, dad was his only son.
My parents have always got on fine financially, able to afford two children and an abroad holiday every year. But never had enough for nice cars, a bigger house, other luxuries. They’ve never struggled exactly, but also never had the best of the best and could never just relax financially.
Now that they’ve come into some money, they’ve spent it on doing up their house, their garden, and been on a Caribbean cruise. And I couldn’t be bloody happier for them. They deserve it. They could never afford to do these things before and pooled any money they had into bringing up me and my sibling. My boyfriend and I have scrimped and saved to buy a house (currently in the process!) and we have our first baby on the way. Parents have given me some to help out which is lovely of them, but nothing groundbreaking, and I respect that. It would’ve sped up our house buying process if we’d been given more of grandads money, but we got there in the end (mostly) by ourselves.
On the flip side, my best friend, her final grandparent recently/sadly died. And she was left the majority of the money. BUT her parents are set, they have a lot of money anyway, don’t need/want it. They have a house, fancy cars, holiday home erc and want for nothing. Whereas my friend is single, has struggled a lot to save for a property and has got nowhere on her own. She has two young children. So it just makes sense in their family for the money to skip her parents and go straight to her. So yeah, I just think all families are different and should do what works for them. Even though I do appreciate what works for the receiver of the money may not sit well with their children/parents but what I mean is, there shouldn’t be a set rule.