Miranda, I completely understand. I have nerve impingement in my neck that causes numbness & pain. It is exacerbated with long bike rides. I've had to accept that my century days are probably over. I, too, am doing alternatives like dog walking & weight lifting (I have osteoporosis too). It isn't as satisfying but there is that part in Desiderata about gracefully giving up things of youth...
And losing the desire to ride - at 5AM it is over 80 degrees and 60% humidity. Ugh.

