Indeed, nothing lasts forever… And yes, this does include graphite iron shafts. When you bend and flex any material, it gains microscopic 'tears' and becomes fatigued. Over time it becomes less resilient and springy.
In both steel or graphite shafts, they can become what is affectionately known as 'dead'. This is where they lose both their sparkle and feel and start to give the impression of being somewhat dull.
The good news is that in steel or graphite shafts, this process will take around six years… By which point, you'll have undoubtedly spotted a new set of irons, and we'll no doubt be telling you the benefits of some new space-age material.