What would you do with a billion dollars?

I would invest about 10-20% of it into a variety of things to feel like I'm doing something smart with it, then I would mostly just live comfortably with the rest and never work again. I've often pondered whether I would donate to charities if I had that much money... But I don't like how much doesn't usually go into whatever cause these organizations are trying to help. I think I would find some way to give back to the community since I definitely wouldn't need thaaat much to be happy.

Invest and maybe buy a couple companies. Try to double it pretty much.

On second thought, to add to my reply, I would definitely make sure I secure a nice amount for family and potential future kids.