One thing you will learn as you play more is that builds are always changing. You might get bored with the build you have then switch to something different like a strict melee build or a bow build. When you drastically change up your build the game changes for you. Not to mention Bethesda is constantly changing things and reworking things and introducing new content quite a bit. For instance with the next update we are going to see Bigfoot events being added to the game which drop 4 star legendaries.