According to Geoff Wisner, it is worth reading The African "to learn more about the author's childhood, personality, and relationship with his father… for the sometimes elegant beauty of the prose".
However, "don't read it for its insights into Africa and its people. Why?
The most efficient way to explain is to say that The African scores high on the criteria set out in Kenyan author Binyavanga Wainaina's essay How to Write About Africa".
Really worth reading the criteria analysis here: