I had been wanting to read this for a while, but the waiting list at the library was really long. It ended up being worth the wait. The book is well written and Obama has a really interesting life. She comes from very humble beginnings and it was fascinating to read what it was like to grow up on the south side of Chicago in the 60s and 70s. Her hard work, perseverance and positive attitude - allowing her to get to Princeton, Harvard and stellar employment opportunities were impressive to read about. Her admiration for her parents and her older brother, as well as her grandparents, also shone through.
From a personal perspective, Obama is exactly my age and followed the undergrad, law school, big law firm path that I did. She was smart enough to figure out it wasn't for her in fewer years than it took me to come to the same realization!
Her descriptions of meeting and marrying her husband, having children, her husband's political career (and her hesitation about it) as well as her time in the White House were equally interesting. I also couldn't help being impressed by the causes she took up when she had the platform of First Lady.
All in all this was a fascinating and well written autobiography. If you like that kind of book, it's certainly worth it.