One of the many things I love about painting is that you can get better at it as you grow old. Even my essential tremor makes for a more interesting line.
I was privileged to watch Milford Zornes at age 98 make a gorgeous painting even though he was nearly blind. Henry Fukuhara was also creating new paintings at an advanced age and nearly blind. As long as you can move an arm and hold a brush, you can still paint.