Dandelion Wars

For exercise, I dig dandelions. This is a reversal from my teenage years when I delighted in weaving the bright yellow blossoms into crowns to wear to school. (Yes, I did.) But experience changes Points of View. I would rather have grass in my yard that screaming yellow flowers that all too soon grow gray and war-like, shooting out their missiles of grass-killing destruction.
So I go out every day and dig up the fiends disguised behind cheery yellow faces. It sometimes seems never-ending, but it's like writing a book. If I keep at it, word after word, dandelion after dandelion, eventually it will get done.
Until the neighbors' evil dandelion seeds attack from over the fence...just like the next book that's screaming to be written.
What kind of work do you feel will never be done?