I’m not sure McCartney was being entirely truthful in the Beatles first U.S. number one but there are certain perils to having too much. The Great American lottery winner is now besieged in her home. (see here). Previous winners have been killed and robbed. Some lotteries make it a condition of winning that you must have publicity which then makes you a target for the greedy and unscrupulous. One was shot by armed robbers in his home. Another had all the money stolen by a con man who became her financial advisor.
I don’t want to get all sniffy about money but it’s dangerous stuff if everyone knows you’ve got it. Best to keep a low profile. I’m actually a billionaire but wear baggy old clothes and drink cheap beer to conceal it.