You're not missing anything.
Sturgis is mostly a bunch of weekend warriors that haul their rarely ridden harleys/indians on trailers, so they can make a bunch of noise to show how "badass" they are, then go back to driving cars and pushing pencils at home.The South Park that makes fun of harley riders puts it best, anybody trying that hard to get attention is g.a.y.,... not homosexual, but fanny-pack g.a.y.
A must see episode.