'Why? Why do the fools fly?' said Denethor. 'Better to burn sooner than late, for burn we must. Go back to your bonfire! And I? I will go now to my pyre. To my pyre! No tomb for Denethor and Faramir. No tomb! No long slow sleep of death embalmed. We will burn like the heathen kings before ever a ship sailed from the West. The West has failed. Go back and burn!'
(The Siege of Gondor, The Return of the King, JRR Tolkien)
With these few words, JRR Tolkien clearly shows us the folly of suicide, euthanasia and cremation all in one go! If it is not clear to you, then please read the whole of The Lord of the Rings (again I hope). Remember that while the Church may allow cremation, it does not recommend it! This old pagan ritual came back into practice in the early 1900's for those who did not want a Christian Burial.