There's nothing wrong with you. Your passion for novelty and learning can be a huge asset in the right environment. There are companies who hire software engineers to quickly build proof of concept prototypes to then throw the prototypes away. You might be a good fit for that. I know Nuance in Montreal has teams that do it.

Also, you might want to consider switching to front end software development if you haven't already. There's always a new framework or library to learn in front end development and the development cycles are shorter.