Someone goes in to a shop, steals a bottle of vodka. Someone clicks on a link, steals an album. Same thing. Both thieves.
Actually, it's very different, although the law says it's the same. To start with, vodka is very much a physical quantity that is tangible. That's how it was with CD's. I'd agree with you if you said this in the age of CD's. That said, the law agrees with you and until we take a good, hard look at the law and its flaws, piracy is illegal.
Software piracy, one can argue, is as much because of the software developers as it is because of the cheap consumers. Vendors have not estimated the supply-demand curve correctly, which is why they charge exorbitant prices. If you look at it, the cost of manufacturing software after development is minimal, especially with physical media being phased out. Why is software expensive? Because of heavy advertisement.
Developers have to get paid, but I think businesses underestimate the extra revenue they would gain from on-the-fence buyers. For example, if you were relatively technologically savvy and were looking for a new OS, would you rather get Linux (for free) or Windows 7 (for something like $300)? Most people would choose Linux unless they got an educational discount or something. However, in the case that Windows 7 was available for about $150 (about $20 more than OS X Leopard is right now) a lot of the fence sitters would be seriously considering 7.
Just my 2 cents, but I think in the next decade, we will be seeing some radical change to the way the music industry works, and maybe price cuts from the software industry as well following the recession.