I’m sure they’ve also considered the millions they may need for retirement, healthcare, and to help their kids buy houses, and, and, and.
As many have said–it’s all relative. For us, several million will go a long way–others need tens of millions.
In the end, none of us can take it with us, so we might as well enjoy it while we’re here–then pass it on. We have very strong spiritual beliefs, so we realize we’re just passing through anyway.