the Cardiologist!! Life is about living, not dying. Go ahead, sit on the plastic wrapped, sterilized couch and wait paitiently to die.. Or grab life by the horns and go out with a smile on your face. Everyone ends up at the sameplace, the only thing differant is the journey taken to get there..., no one lives forever.
Not saying keep the bigger bike, but if you still love riding get something smaller, maybe even as small as a TW200, or maybe an XT250, do some gravel roads, smell the fresh air, see some natural sights. Go out and LIVE