I am Catholic & was never able to understand the Churches reticence towards cremation. We all end up in the same final state - dust. I.E. "Dust to Dust" is a reference to the Book of Common Prayer quote "Ashes to ashes, dust to dust" (referencing the Bible at Genesis 3:19) which is often spoken in prayer at a funeral.
And, yet, cremation often seems to engender very kooky notions of the afterlife. i.e., "I want my ashes to soar like the eagle..."