Why the earthworm don't like the space in soil?

Earthworms thrive in moist, aerated soil because they require a damp environment to facilitate respiration through their skin. If the soil is too compact or lacks sufficient moisture, it becomes difficult for them to move and access organic matter for food. Additionally, overly dry or dense soil can lead to stress or death, making it less favorable for their survival and reproduction. Thus, they prefer spaces that provide necessary conditions for their biological functions.