Instead of looking at this as an undesirable chore use it as a reward. Sew/quilt on this a reward for getting something else completed. it is looking gorgeous!
Your quilting really sets the blocks. Bravo! It is going to be a show winner when done. Please keep quilting. Absolutely love what you have done so far!
As intense the quilting is, it gives your quilt so much life and energy. Despite your protesting arms, I would keep going, as it will be a totally awesome quilt when you finish it.
Don't give up. This quilt is too cool to not be finished! Just make sure you take micro breaks (5min when you start to feel pain) so that you don't suffer from chronical pain in the future.