Maybe this is just a fundamental difference in philosophy that comes from having parents who didn't have a pot to piss in to begin with, but nothing pisses me off more than people who expect to live off their parents' wealth. It's their money. They presumably raised you to be a functioning adult who is capable of looking after themselves. "That inheritance is a safety blanket for me"? They don't owe you shit. If they wanted they could spaff it all at the bingo instead of helping their grandkids get a leg up, and they would still be completely in the right.
Speaking more broadly, I think there's a huge difference between being rich and just having rich parents. If someone can admit that distinction honestly, I actually respect that. What frustrates me is when people expect wealth to transfer automatically, like it’s their right, not their parents’ choice.