I have had one of my bikes stolen in Honolulu, as have most of my riding friends. Harleys are especially vulnerable. It really sucks! Oahu is NOT a rider's paradise. In fact, it has terrible road congestion, and, in reality, there's no where to go. And, the hot weather eats radiators, batteries and tires fast.
I moved to a small town on Vancouver Island in B.C. Canada. I can leave my keys in any of my vehicles without fear of theft, and I get to ride in the cold rain!!! UGH!