As an immigrant who grew up with nothing and have no family support network, now that I make ridiculous money working at FAANG, I spend it all because I know I’ll be fine if I go back to nothing.
It's good that you'll be fine if you go back to nothing, but it very much isn't a reason to spend all the money.
Reasons to spend all the money could be eg that it makes you happier (I very much doubt that) or that it makes the world a better place (you didn't say how you spend the money, so perhaps?).