Well, I just thought of all those questions here about how to continue when things are physically difficult (due to age, illness, accident, or something like this).
My grandmother that taught me knitting was working on straight needles all the time. She was mainly making pullovers for my brother and me and for herself. She was suffering shoulder and neck issues and had problems with her joints.
From her docotor she learned that holding the straight needles with the weight of the knitting pulling down on that lever was the issue she suffered. So she switched to circular needles entirely and was happy with knitting for many years later.
That is my reason why I switched to circular needles a LONG time ago in my childhood and never bought straight needles (other than dpn, of course).
Now we empty my grandmother's house after she died and first my mother found a bunch of old straight needles (that are now residing with me), then I found a box with about 20 circulars in many different length and sizes. Also some dpn, cable needle and "quick knit needles" (those that are like circulars but with a stopper on the end and not connected sides).
For a lot of crafts you can make life easier if needed. And knowing how... makes it a lot easier.