I grew up playing the game of golf. After 30-plus years, I switched from steel iron shafts to graphite. Maybe I wasn’t the classic candidate for graphite: Early 40s, single-digit handicap, mid-90s mph swing speed with 6-iron (driver swing speed north of 100 mph). But my hands, wrists and lower back needed a break, and I liked the idea of graphite reducing the shock felt at impact. Graphite iron shafts, at the time, had the stigma of being for senior golfers with slow swing speeds in desperate need of distance. In addition, the shafts cost more than steel and…