Did anyone else keep their "Warrior Handbooks" from Basic or Field Training? Is it still useful?

I'm not sure if the Army, Navy, Marines, or Coast Guard carries this with them during basic training, but thought I would ask anyway. I had a close friend present my original 'Warrior Handbook' to me at my wedding last year and recite "GEN Colin Powell's 13 Rules" aloud. He had the whole place rolling in laughter. Lots of memories trapped in this book. Anyone else have something similar?