It's never too late to start playing guitar! I have lots of students who start from zero in their sixties and beyond. Often guitar is something they have always wanted to take up, and just never had time for before. The extra practice time that retirement or semi-retirement allows often enables these students to advance at an impressive pace. But starting as an older adult can present unique challenges, especially physical ones like arthritis.
I haven't dealt with arthritis personally, and am not an authority by any means. But my general understanding is that staying active and keeping your joints and hands moving helps with arthritis rather than making it worse. Is this correct? What advice do you have for playing guitar with arthritic hands? Are there any exercises, stretches, or general tips you have discovered or developed? I'd love to hear from some of my students who manage to play guitar well in spite of joint issues and limited mobility/control of the fingers. Hopefully you can help each other!