> No one considers human-made art or human-made monuments to be human.
How can art not be human, when it's a human creation? That seems self-contradictory.
> They can't vote...
They get a vote where it matters, though. For example, the presence of a historic building can be the decisive "vote" on whether an area can be redeveloped or not. Why would we ever do that, if not out of a sense that the very presence of that building has acquired some sense of indirect moral worth?
Maybe you could give us your definition of "human"?
I wouldn't say my trousers are human, created by one though they might be
There is no general rule that something created by an X is therefore an X. (I have difficulty in even understanding the state of mind that would assert such a claim.)
My printer prints out documents. Those documents are not printers.
My cat produces hair-balls on the carpet. Those hairballs are not cats.
A human creating an artifact does not make that artifact a human.