Time to Learn
In the world of software development learning new techniques and concepts is essential. If you do not allot time for learning, you will slowly become a legacy system.
Taking time out of your work day to read up on new practices and technologies will allow you to be more creative when solving problems. Having this wide assortment of tools creates different angles of attack and numerous possible solutions.
By staying inside of your own little world and not growing outside of it, you are looking through a very small lens.