Maintenance is a must, as any homeowner will tell you. Every part of your home has a life expectancy, which can be either exceeded or cut short depending on how you care for your home.
It is just natural to spend a little extra time caring for the expensive items since that will end up costing you a lot more money when they need repair or replacement.
Your roof is one of, if not the most expensive part of your home. It is also very vulnerable since it is under constant assault by the elements. The sun beating down on it, rain flooding it, hail pounding it, and wind pulling at it. Of course, a well-built roof can stand up to this beating, but you should do what you can to prevent unnecessary damage to your roof.
If you have tree limbs hanging down over your roof, you should cut these back. They can add a lot of moisture to the roof, and fallen twigs and leaves can become a collection point for rainwater.
Clearing your gutters and downspouts will also protect your roof by ensuring that water can funnel off of the roof unobstructed.