Most people only think about worms after a summer rain, when they see a bunch of them out on the sidewalk, or when they go fishing. The magic of what worms can do is really incredible, if you take a moment to think about it.
Charles Darwin said of worms "It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organised creatures."
Worms have a specialized gut that allows them to easily process rotting vegetation and other waste materials such as livestock manure that when excreted from the worm is a natural, microbe-rich, safe material whose nutrients are readily absorbed by plants.
Unlike traditional fertilizer, there are no chemicals, and you won't burn your plants if you use too much vermicompost (though there is a point of diminishing returns, so no need to use more than about 20% by volume of vermicompost to soil).
More later on the biology of worms. Have a great night!