It's all about the Curb Appeal
Most buyers like to see homes for the first time during the day, but if they live in the area, they will do several drive-bys of the the potential home during the day and at night.
For a very low investment and an easy DIY project, you can add outdoor landscape lights to the front of the home to illuminate the exterior.
You have several options; light up just the front face of the home or add additional lighting to the trees, the stairs leading to the house or a pathway to the back of the home.
For a home being listed for sale, I love to come back at dusk to do an additional photo of the outside of the home with the home's landscape lighting on. This really makes the home "POP" and stand out from the other listings. Isn't that the goal?