It’s crucial to have the ability to switch which hand holds the weapon for better tactical flexibility. Imagine this scenario in a third-person perspective: if your weapon is in your right hand and you’re positioned against a wall to your left, it’s easy to peek and aim because your head and weapon naturally align with the open angle. However, if the situation is reversed and the wall is on your right, holding the weapon in your right hand forces you to expose your entire body to fire, leaving you vulnerable. Being able to switch hands would allow for more precise and realistic positioning in such cases.