Are you suggesting if I copied all your bank records I haven't done any harm because you still retain the originals?
Destruction isn't the point. The point is that something paid with public money isn't available for the public's use. You have no rights to any object just because you pay taxes.
A government levies taxes and through appropriation spends that money. If a park is built, then fine use it. If a tank is built, then too bad that's not your tank.
