I'd also like to bring up that minor injuries like a pulled muscle in the wrong spot, or a broken finger can make it difficult or impossible to ride a motorcycle reliably. It can also extend the healing period for the small injury you might have much longer than it needs to be, or almost indefinitely.
Hell, even with a broken arm, it's still very possible to drive an automatic transmission, and it's still easier to drive stick with a broken arm than a motorcycle. You need all your limbs and then some to be functioning when on two wheels. We're fragile, squishy creatures