Sadly Earthworms can be soil destroyers.

There are many different creepy crawlies that enhance the soil.

I live in North America. The last ice age wiped out the earthwarm. Other species took their place. The native composters produced rich loam that many find more nutritious that the clay produced by earth worms.

Unfortunately, people introduced earth worms. The worms reduced the quality of the soil. They also wiped out a huge number of species that had evolved to thrive on loam.

Earthworms are interesting. One should prefer native composters to imported ones.

!WINE