I love well fitted leather saddles, Suntour parts, Normandy hubs, box section wheels, spokes, unadorned frames, beautiful lug work, 3 piece bottom brackets, quill stems, down tube shifters, cages and toe straps, steel, the smell of grease, patina, and the history that comes with vintage bikes.
I love internal gear hubs, fixed gear bicycles, and single speeds.
I dislike carbon, aero wheels, too many gears, bikes that look like billboards, overpriced and fragile parts, low spoke wheels, generic looking parts, and the look of threadless headsets and stems.
I hate grip shifters unless they are SA 3 speed.