Madonna remains the most visible performer on the planet as well as one of the wealthiest but would anyone seriously say that artistic self-development is her primary motivating principle? She is too busy with Kabbalah fashion merchandising adoption melodramas the gym and ill-starred horseback riding to study art.
Even if we die at 100 we're still dying young. I want at least 700 years. There's a lot of travelling and books to read and movies to see. I'm not going to squeeze it all in in 85 years.