You’d have to rearrange everything about your life. All sorts of people would come out of the woodwork to scam you, distant cousins you’d never heard from would get in touch; resentments could grow between you and friends/relatives you have been close to who expect you to share it all. You’d be a possible kidnap/ransom target, have to worry about financial managers or accountants trying to steal from you; and you’d probably get audited routinely.
I guess I’m old, but I don’t need all of that. A million would be nice; but except for the ability to contribute to some worthy charities, hundreds of millions would be a burdensome mess.
It sounds like a nice change.