A good memoir is no easy thing to write, and I can tell you that without ever having bothered to read one before.
I mean, really, why would I read someone's memoirs, for crying out loud, when there are stacks of mysteries, police procedurals, noir explorations of the seedy underside of the City of Angels and thrillers waiting to be read? There's only so much time in a day devoted to blogging, karate and work, after all, that can be used for reading -- so whatever one reads had better be entertaining.
Leo Tolstoy? Please!