We usually view property as so desireable that we neglect to recognize that property not only moves into ownership, but also out of ownership, at the will of the owner.

For example, consider the individual who goes to the store and buys a can of soup.  Carrying it home, this hungry individual then attacks the can with a sharp instrument, destroying its symmetry and function, and pours the contents of the can into a saucepan.

What does this individual do next?  Most often he or she discards the can, either into a waste bin or recycling receptical intended for that purpose.

Why did this person throw the can away?  Doesn't he or she realize that more was paid for the can than for what it contained?  Why does this person throw away the item of the largest cost?

The answer of course is that when this hungry individual purchased the can of soup, he didn't really want the can.  What he really wanted was the soup inside the can.

Was he forced to buy the can?  Not if he wanted to make the soup himself, which he could certainly have done if he had the time, the skill, and the ingredients.  The can and it's contents were purchased as an item of convenience.  It is far more comfortable and efficient to bring the soup home in a can than in a bare hand.

Also, so long as the soup stays in the unopened can, he can keep the soup for a later time.  He can also choose a later time or a different place to dispose of the can.  Or he can wash it out and keep it, for storing screws or marbles or paper clips.