OK I've been playing with computers since the early 80's. I have been playing computer games for all of that time. I see no reason to stop now, Arthritis or no arthritis... Mine is in my knees and wrists, so not my hands yet. I fully expect to be still playing computer games when I'm in the retirement home!
So what keeps the interest up? well it's the people not the game. The game is important of course but the people that I play with are much more important. I love playing FPS (First Person Shooter) games, currently Battlefield:2, but next year who knows. the thing I do know is the bunch of guys I will be playing with. The clan I'm in has been around in one form or other for 10 years, I've been in it for the last 5. There are times when I don't much feel like gaming, but when the guys are on, I'm on and you know what? it's great. You have had a hard day, stress of work getting you down... Jump online chat with the guys (and galls) shoot some people and get shot, and all of the things that you thought were important disappear.
So my advice, find a good bunch of gamers, people that don't care if your crap or walk on water, just care that you turn up and play your part. Play whatever they play and have fun!!! It's the most important thing.
Here is the plug...
The Senile Soldiers Clan
Average age 40+