One good reason is having enough light can prevent eye strain. When working in a poorly lit environment your eye attempts to compensate by relaxing the iris muscles. Focusing on something, on the other hand, sends a signal to contract to your retina in an attempt to clarify the image. The mixed signals your eye muscles are getting is what causes eye strain which will often lead to headaches and back and neck aches.
The reason is simple - they look great, they make your house look great. Pot lights are recessed into your ceiling which allows you to install them virtually anywhere without worrying about space. Distributing potlights over a room evenly results in brightly and evenly lit rooms which is great because bright light improves your mental state just by you seeing it. You will feel more energetic and light-hearted. You will think more clearly and have a faster reaction time.