I can't imagine riding with no mirrors honestly. I rode my brother's sv1000 which has the shittiest aftermarket mirrors that are almost completely worthless and I feel pretty unsafe not knowing what is coming up behind me at all times. I often see people flying down the road rapidly changing lanes in my mirrors and can prepare for it. Without mirrors, I might look over my shoulder to a "clear" lane and then get hit by the car who just quickly changed over two lanes or was traveling so fast that he was out of my line of sight when I checked my blind spot originally. I have also known more than one fellow rider to avoid getting rear ended at a stoplight because they could see the car in their mirrors approaching at speed with no signs of slowing down.