P Praise be to you, Lord Jesus Christ. Dust to dust, ashes to ashes. A stark reminder of from whence we arose and to whence, all other factors being equal, we shall return. We are by nature and deed - a walking, talking, thinking, doing package of dust and ashes. There is not much value in dust and ashes.
Gardeners know that it can be used to help grow plants - but basically it is worthless.
In fact it is often less than worthless - it is a hinderance and a liability. You can't make it pretty by painting it, or smell good by spraying perfume on it. And that is us too. It is the way of the Cross. The death of Jesus was God's way of placing a sign of infinite value upon that which would otherwise be worthless.