A couple things: Some who will never use a bike don't like to make adjustments in their lives for those who do. Society is to be inclusive. There are people who use those bike lanes (other than the homeless) and as they become more acceptable and accessible more will be encouraged to see them and use them.  I use the King st lane several times a week. I always see bikes on it. Probably not the times you may see it. Using a bike means less cars, especially ratters which are prone to breaking down and making a real traffic jam. It's better for the environment and better for the bicyclist. For local mobility it's much better than a old used-up car or moped. I have a nice car and used it when I need but hey: It's Hawaii where the weather is great and conducive to being out in it. Plus, oh, yea, it's fun to ride a bike... ;)