Closing in on 65 and still a full time field engineer. Clients have grown with me and brought their kids. Now more younger, eager and with the means to stay abreast of the newest toys. Just like always, things break and need to be fixed or replaced. Not many under fourty will climb a ladder to adjust a dish or pull cables through underground to hide a satelite dish in a tree. If you slow down, it will catch up with you but only if you let it. Age is a number but cannnot be judged alone.