Benefits for keeping your house protected. One of the main reasons to keep your gutters clean is to prevent water damage to your house from overflowing gutters. When leaves and debris collect in your gutters it makes it much more difficult for the water to find its way to the downspout, making it a lot more likely for the water to flow over the gutter and into facia causing rot. 

Another key reason to keep your gutters clean is to keep insects and animals further away from your house. Congested gutters are a great, safe place for insects to lay their eggs. The insect larva can in turn bring animals closer to your house looking for food.