Poetic Justice

In Dante Inferno, the Second ring of Seventh Circle contains the souls that committed suicide. Their punishment is to live as trees for eternity, constantly crying out in pain, and feeling as if they're being dismembered every time a branch breaks. This is poetic justice. When committing suicide, these souls were completely aware of what they were doing and decided to abandon their bodies anyways. Therefore it is completely fair and reasonable for their bodies to leave them as their punishment in hell.