How is it possible for you to enjoy a hobby for so long? Well first off, I along with many others have many hobbies. K'nex is rather low priority actually. K'nex is just easy to build with but still yields fascinating results. For those who can't make something as good, they try to get better. How's that any different from things like sports? They all follow a same pattern. You work, you get results, you have a feeling of accomplishment. People only see K'nex as a toy. It disappoints me.