The only reason I ever considered visiting Cleveland was to see the Rock & Roll Hall of Fame. Period. It turns out there was a lot more going on the weekend we visited this down-but-not-out city. Still struggling economically after the Great Recession, Cleveland ranks as the number two economically distressed city in the US (after Camden, NJ). Empty downtown office buildings. Abandoned housing projects. Unfinished retail landscapes. Polluted rivers and lake. Old city charm vs. reality.…