True, but you'd need to really stay under the radar in such a world. Any point of contact where someone else knows you have that money would put you at risk. And those can be generated just by getting the money in the first place.

For the record I think it would be a terrible world. Historically, mob violence often kills innocent people, all it would take would be an accusation. And one person's poverty is another person's wealth. They wouldn't exactly stop to ask about the economically defined classes. It would be more like, "Dave got a luxury car, I wonder how much money he's hiding..."

And also, I think I would be someone giving it away as fast as possible. I'm like you, after a couple creature comforts and securing the rest of my life, there's no more need for the money. It's not like I can take it with me.