I live and work in very low crime areas. I take the ignition key with me and call it good. I live next to Flint though, which is one of the most crime-ridden cities in the country. When I go into Flint I chain the wheels using a cable lock I picked up at Home Depot. I could spend a lot more on a lock if I wanted, but there isn’t a lot of point. Somebody wants to steal my bike, they’re going to get a couple of big guys and lift it into the back of a truck. The cable lock is just there to annoy them and make them consider lifting the HD parked next to it and leave my 12 year old Honda alone.