While some people don’t feel like they are necessary, it can really be a huge advantage when trying to get a hook out of a fish’s mouth. Also, if the hook gets stuck deeper in the fish’s mouth or even deeper towards the lungs, it becomes much easier to remove the hook with long enough pliers and a hook remover at the end.
So, while you can do just fine without a hook remover at the end of your pliers, it is highly recommended that you find pliers with a hook remover to make your fishing experiences easier. Also, getting the hook out faster means more chances to cast more lines and catch more fish!