The diference is just SO BIG!!
I have noticed that many artists put beautiful messages in their work:
freedom, unity, etc. But when people start to share with others what
these artists do, they call you a "pirate". I agree with you in that
software and art are different, but I don't see why art should have more
restrictions than free software.
I like freedom in general, and in this case, I see supporting free
software and free cultural works as the best option for society.