Sir Rod Stewart, 79, has made a rather haunting prediction about his own mortality and health, revealing how many years he think he has left. The Do Ya Think I’m Sexy hitmaker has spent his entire life performing for crowds of adoring fans while living a rock ‘n’ roll lifestyle and continues to fulfill performing duties in Las Vegas. Plus earlier this year, Stewart pursued a new career avenue when he collaborated with Jools Holland on a Swing album for the first time. The 79-year-old will perform for crowds at famous Vegas hotspot Caesar’s Palace from July 24 to August 7 and has now opened up …