I'm not, but you might be.
Suppose you inadvertently knock over a priceless vase, smashing it to pieces. You say to the owner, "There's no real harm done; after all it's all still there." And then you argue:
1) There is nothing to the vase over and above the ceramic material that constitutes it.
2) When the vase is smashed, all the ceramic material that constitutes it remains in existence.
Therefore
3) The vase remains in existence after it is smashed.
"I don't owe you a penny!"
Adapted from Nicholas Rescher, Aporetics, U. of Pittsburgh Press, 2009, p. 91.
The above may serve as an introduction to the problem of the composition of material artifacts and to Peter van Inwagen's strange thesis that such items do not exist. See Van Inwagen's Denial of Artifacts.