Earthworms remove surface debris and fungal spores from the garden; they clean the garden of unwanted organic materials. Earthworms eat their own weight in organic matter and soil each day. A pound of earthworms eat a pound of organic matter and soil each day. Earthworms turn soil into humus improving soil structure.
From. https://harvesttotable.com/benefits-of-earthworms-in-the-garden/
Seasoned 
I do love a bit of worm farming, it’s always a joy to spend time thoughtfully adding layers to the compost heap. Not so keen on physically turning it but always love the hold at the bottom.
our compost is actually just worm farming. we got happening.