What the hell does anyone need 100 billion quid for?? If I ever had that much I'd get shot of practically all of it and keep a couple of million for investment purposes. Not for any particular moral or religious or even altruistic reasons but rather tax reasons. I hate doing our tax returns each year and I object to employing an accountant on the basis they are just glorified calculators who are also massive rip-off merchants. Doing a tax return for 100 billion pounds would kill me so if I can get rid then brilliant.
I don't want a big house, I don't want an island, I don't want anything really - happy as I am. Even if I were to learn to drive and buy a car it'd probably be something adult and responsible like a Volvo, not a Bugatti Veyron. Charities, family, church - whatever; they can have almost all the cash and the rest I'll keep to live on until I'm dead and then my kids can enjoy it.