Successful careers and businesses are built through good relationships. Having credible references initiates some of those vital connections, by almost instantly helping you establish trust and validity. Your professional references should be strategically compiled with a diverse roster of contacts, ones whom you actually stay in touch with. Maintaining good references is evidence of good communication skills, and says that you’re a well respected and a likeable candidate.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.