Each of my bikes has quirky characteristics. Over the years I've learned to adapt. I remind myself that bicycles are tools for transportation and treat them accordingly. Each steed is unique, though only the owner could put up with the individual eccentricities.
My Trek Antelope is the most dinged beauty, mainly because of it's history (see Around the World.) It's funky feature is the off-kilter position of its low rider rack. The loop was once perfectly centered over the tire, but yours truly hit a parked car in Florence. Sure, I could probably straighten the kink, but why bother? It functions just fine, though it is a constant reminder of my ghastly blunder.
What unique features characterize your bike?