J.D.Salinger (author of the magnum opus "Catcher in the Rye") was born on January 1, 1919. Were he alive he would have been 92. The secretive author turned a total recluse from the year 1965, when he would have been 46 (or, so I presume).
The reason he became a recluse is explored in this article by Steve Alburty in Finebooksmagazine.com.
The cost of popularity can be onerous for most authors who aren't prepared for it. (Though some crave, even would give a limb, for it and don't get it.) Because writing is a lonely profession and a writer lives in his imagination and story most of the time.