I think as you get older it gets more difficult to maintain optimal health which can translate into a decline in pinball skill. I know for myself, 17 years of working in front of a computer doesn't help matters any. I consider myself physically fit as I diet and exercise often but I do suffer from eye strain and mild carpal tunnel (as a result of my job) which can make it more difficult to play pinball as it can affect your reaction times and ability to deal with flashes of light. I think when you're young you can get away with having bad habits and being relatively unhealthy but when you get older you have to work harder to maintain your health and keep it from limiting you.