It turns out that middleweight sport bikes didn’t die. They just got boring. To those of us bikers long in our years, one of the most glaring changes — besides the advent of 170-horsepower dirt bikes, electric scooters and the thankfully broadening appeal of biking to a wider audience — has been the demise of the middleweight supersports segment. Once a mainstay of motorcycling, 600s were, if not the ultimate in aspirational motorcycle, certainly the gateway to the 1000s that were. Motorcycle manufacturers spent oodles of time and money designing them, the young Rossis and Marquezs of the future racing them, and we punters, well, didn’t we lust after them? And now they are all but no more.