Maybe no one wants to steal my cheap department store bikes. lol But, I've ridden various bicycles over the years with the same cable Kryptonite lock without having a bike stolen. As a matter of fact, it started cracking here and there.

I've had some bicycles stolen in certain situations though. One time I had one of those locks that you click to close. I found out I had a tendency to push hard enough but not quite hard enough to completely close the lock. So the spring inside would push up and leave it unlocked. Well, a brand new department store bicycle was stolen like that. Another one was stolen with a huge lock on it but was locked to a wooden fence. One board was pushed out and it was taken away. Of course, the superintendant was a known gambler. He's the one who told me it was gone. He also was the one who demanded that my bike be locked on the wooden fence.