Don't ride hurt! We don't race for a living. We ride for fun. Riding when you are not at your best will just lead to more injuries. It is not worth it. That is what my 42 years of motorcycle riding has taught me.
Now at some point you will be injured to the extent that you may never heal completely. At that point you have to realize that you can't ride as fast as you once could. I still race but I can only ride about once a month. It takes that long for the pain to subside to the point that riding is fun again.
I have broken my neck, broken my back twice, had 17 concussions, broken both scaphoids. have scarred my lungs to the point of only having 51% oxygen exchange rate, broken my hip and destroyed the femoral head of my left leg. These are just the major injuries that you can't fully heal from. I have also broken both legs at the same time, broken legs at different times, dislocated my right knee, broken both arms at different times, broken more ribs than I can remember, broken my left clavicle, broken my tail bone three times. These were all easy to come back from and healed completely.
Not all of my injuries are from motorcycles. I am an electrician and that has lead to some of my injuries as well as riding bicycles, rock climbing and just having an active life style.
Living can kill you if you are not carefull!