Morality and downloading

[Chas]

It is property, so it has the same basis as any other theft of property.

Downloading a file that has already been uploaded to a server is merely duplicating the file. There is no law against duplicating the file. Duplicating property is not theft.

Theft of intellectual property is theft.  
You can rationalize it all you want, but if I take a photograph or write a program, you have no right to simply make a copy of my work for your use.