Regular gutter cleaning is important because it protects your home from water damage, pests, and other issues:

Water damage: Clogged gutters can cause water to overflow, which can lead to damage to your roof, walls, foundation, and
basement.
Pests: Clogged gutters can attract rodents, birds, and insects, which can cause damage to your home and spread disease.
Mold: Mold can grow in gutters, especially during the rainy season.
Fire hazards: Dried debris in gutters can catch fire and damage your roof or ceiling.
Roof collapse: Clogged gutters can cause structural issues that lead to roof collapse.
Foundation cracks: When water freezes in gutters, it can gather around your foundation and cause cracks.
Landscaping damage: Gutters can damage your landscaping.

Gutters should be cleaned at least twice a year, in the spring and fall.