Why is the Earthworm a nuisance?

Answer 1

Actually, it's NOT. An earthworm is great for the environment! It tunnels through the soil loosening it up and making it softer which helps plants' roots dig through better. The worm's tunnels create passages for air and water to enter the soil. An earthworm eats dead and decaying plant material and as the food is digested it is broken down into its basic minerals which are passed out in the worm's feces making the soil more fertile. These nutrients are then absorbed by the plants making them healthier.

The only time earthworms bother me is when it rains heavily and their tunnels become flooded. To avoid drowning, they crawl out of the soil and wriggle on the sidewalks were I have to mince my steps to avoid squishing them then when the sun comes out I have to watch them dry up and die or be carried away by ants.