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I have two friends who did, independently. I surely doubt that they are still running things as they did way back then. But, at the time, and for almost a decade afterward, it enabled them to travel freely around the globe and have a relatively luxurious lifestyle.

Interestingly, both eventually got married and settled down back in the states. They each seem to be doing well - but have more conventional lifestyles now (i.e. Living in the burbs with kids).