If I were rich enough, I would seriously consider living the life of a super spy. Seriously, I would live the life of James Bond without the super villain. I would obtain fake passports, id's, and even disguises to travel by boat, plane, car or train all around the world. I would hire ambassadors to meet me and detail objectives of my mission.
Why do I need to sneak around if I'm rich and don't need to put myself at risk with fake identification? Because it's bad ass.
Imagine some famous broad that I seduced "stumbling" upon my cache of fake identities. Imagine how great it would be to lie at that point.
One day I would be a superstar playboy from the Emirates. The next day I would be the ex-government official of an obscure island country. The possibilities would be endlessly hilarious.