This is one of the best rock memoirs I've read, seriously. Duff tells it like it was, he owns it (good and bad), and he's found a way to be funny and eloquent about his own debauched life.
There's no reason he shouldn't be dead: his pancreas exploded from alcohol abuse, and tons of his friends died from addictions and AIDS. But somehow Duff McKagan skirted the edge of the abyss and lived to tell.
If you like Guns n' Roses, you'll enjoy the story. But it's actually his writing about post-pancreatitis recovery and his family that make this story such a gem. Additionally, it's amazing how many now-famous people Duff grew up with in Seattle and became friends with in Los Angeles; but he doesn't resort to name-dropping - he really just tells his own story, but with this amazing cast of characters and cameos.
(I'm putting this one near the top of my favorite rock books list - just behind Nikki Sixx's "The Heroin Diaries" and "I Am Ozzy" by Ozzy Osbourne)