These wonderful ladies hold your pants up while you complain about Boss Tweed or the Union Leader breathing down your neck, all while you escape the constricting confines of the leather belt strap. Imagine the belt, always forcing you to think horizontally. With suspenders, you create a vertical view, trying to keep your pants UP rather than TAUT.
Remember how much you hate the cummerbund? Those ugly weird pleated midriff belts were made for tuxedos WITHOUT suspenders. You can't wear both. It's suspenders or a broad black sash draped 'cross your naval section. Choose wisely. But let me inform you upon this fact. Cummerbunds were invented by a cockney. Those east-enders from the St. Mary-le-Bow, invented that waist accessory whilst listening to the Bow Bells. Now THAT is having little class, my friends. I scoff.
Suspenders. Because your dad can't beat you with them as well as the belt.