Few millions aren't boring, but billions, hooah. you will get bored quickly. yeah, you will have a private jet and maybe an island but nothing to do with the rest.
After all, you're still nothing but flesh and bones, and I think that billionaires forget that sometimes.
You gotta watch out for assassination attempts, kidnapping attempts, being a target for the mafia... etc etc etc. The there are the people who want to take away your power for themselves so they may try to frame you for doing crimes, and stuff like that. You'll have a lot to worry about every day.