It depends where you are. I live in a country where you are not expected to help. Also many parents activelly try not to leave anything behind for their kids. There is a saying here that goes ‘if there is any inheritage left when i die, i must have miscalculated’.
That said, the system does help with any basic needs and healthcare
Here, there is a 450 year old house that is now owned by a group of citizens who use it to arrange local events.