You got about 3 years more than I would expect. I started wearing Oakley back when Greg Lemond was wearing them in the Tour, and though I liked the style and the protection, longevity of the plastic-framed models has never been good. I got a set of Juliets back in 1998, and that was the last pair of Oakleys I bought, as I am still wearing them today. Every other year I get new lenses and have the frames tightened, and that's it. They are tough, I had them in my pocket when taking a tumble ice skating, I fell hard on the glasses. They didn't break, but one of my ribs did.