[euzi]

You cannot spend a billion in one century if you spend $25K per day, I cannot understand why a billionaire will work until the age of 99..

[christophilus]

For the same reasons writers write or painters paint until they die. They love what they do.

[stockboss]

Almost any human being can live extremely comfortably with no financial worries at around $30m net worth. After $30m, it becomes a game of pride, ego and high scores.

[x86x87]

billionaires are post-money. they don't get the normal thrills you and me get when we are spending money. now it becomes about "making an impact", about leaving a legacy, about being remembered.

[zeroonetwothree]

Probably because it’s fun.

[callmeal]

> I cannot understand why a billionaire will work until the age of 99..

It's that insane obsession with collecting more of what they love: $$$.

[mediumsmart]

because the money is collateral damage, its not the reason for working