That depends on the setup. In a field battle with little to no cover of course ranged attacks are a huge boon.
But not every encounter should be without any form of cover, against monsters that are slower than you, have no ranged attacks and no way to pull you towards them/slow you down.
Tower shields also exist for a specific reason, and LU did an amazing job with them (you can get cover AND if you dodge you also gain an expertise dice to your AC, for a minimum of +3 which is nothing to sneeze at).