"This is another subject that MN and RL don't converge"
Very true.
That's because mumsnet is achingly middle-class - full of people who think it's not 'naice' to discuss money and inheritance.
Posh people don't have any such scruples, which is why their money often cascades down happily through the generations.
I also don't 'get' this thing of 'spend it all before you go' - which I actually think most people just say to make a point of sounding ungrasping.
The majority of very solvent elderly in this country have made their money in property - through a fluke of fate that has left their children and grandchildren impoverished sometimes, and excluded from home ownership altogether.
Also many of the current generation of elderly - particularly those in public sector jobs - have had 20 to 30 years of retirement on index linked pensions, which has cleaned out the public purse, and will result in their children and grandchildren having to work past 70 for a lower pension.
Seriously - many of this generation of elderly has had in incredibly good. The view that they should spend their legacies as fast as possible on SAGA holidays, 'because they've earned it' - well, not the old people I know, who mostly have had a much better quality of life than most people of my generation, and have often cost the NHS 10 x what they ever paid in in NI and tax over their lifetime, because it's also a generation that doesn't believe in exercise and lives on rich tea biscuits and sherry.