If properly maintained your new gutters will last for decades. Make sure to check them regularly for clogs preventing proper flow. Once blocked by any debris they have a 99 % chance to catch more debris and further inhibit performance which will lead to "leaning or falling" off the home, sagging in low spots will become more prominent, and the gutters can become so heavy the clips and screws could break- falling off the home and possibly causing injury. We always recommend leaf guard even if trees are far away from your home. More times then I can count I have pulled tennis balls, base balls, toy cars, drones, clothes, and anything else you can imagine out of unprotected gutters. Just some food for thought!