The main benefit of using security shutter is that it increases your security protection. It helps to protect your business from break-ins and vandalism to name a few.
Another benefit is that they can help you prevent your windows from being broken. Anything thrown at the area will more than likely bounce off of your security rather than smash your window.
Some security shutters can also help to reduce noise in the building. For example if you are situated by a busy road, people in your building during the night may appreciate security shutters which can reduce the traffic noise.
Finally, security shutters help to increase your privacy. For example if there are people or objects in your building which you do not want to see. Security shutters will help to prevent them from being seen.
So, if you want added privacy, more protection and more security then I would highly recommend buying security shutters.