I'm almost 50 and have some grey hair. I bought my bike in the 90's, a custom Vail Cycle Works Ti frame. I'm contemplating upgrading to a 10-speed groupo from my Dura-Ace 7700 series 9-speed groupo. What I'm not considering is replacing the frame. At least for me I plan to work through at least two groupos before frames improve enough to warrant a frame upgrade.