It might sound fun to 'have' $10bn but consider losing your family, knowing that every person you meet is after your money (because they are), not having anyone give you responsible feedback, spending large amounts of time dealing with lawyers and accountants and finance bros, and basically never being 'normal' again. Winning a huge amount of money in a lottery carries a huge chance of ruining your life.

There's a limit to the amount of money I'd want (or could even use), and it's well below $10b. If someone came around with $10m and an honest deal and someone else offered $10b to buy the morality in my left toe, I'd take the $10m without question.

There is nothing you can do with $10bn that you cannot personally do with $1bn.

You can only buy the International Space Station twice.