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I read this sci-fi short story a while back - here's what I remember of the plot:
- People could live 'forever' by buying themselves new host-bodies for a certain amount of money (a million dollars, I think). For some reason everybody was rich or at least they could afford a host body every X or so years so virtually everybody lived forever.
- People are spending their lives learning new skills, like playing the piano, science, sports, etc...
- The protagonist lives many lives and becomes an expert at 'everything'; after a while he gets tired of 'living-to-learn' and decides to transfer his mind into the body of an infant (who never ages?), thereby living a life of complete ignorance (and bliss).
The story is part of a 3-story 'series' written by a not-so-famous American author. It was quoted in an article in the New Yorker - a couple of years ago, perhaps.