You're working on the assumption that copyright laws are unjust when you proclaim civil disobedience. There is a difference between (very) stringent fair use regulations and some Victorian-era law that is no longer enforced anyway. You can always point out the "boundary conditions"--in this case laws that are outrageous and possibly un-enforceable, but that doesn't mean that copyright laws fall in the same category. Because they don't. Copyright law is necessary, believe it or not, and enforcing intellectual property rights is going to become more and more difficult as the internet/P2P grows.
Even if all the major media companies don't know, we computer people know that any digital media is crackable, given time, and thus the future of digital media is very shaky. Maybe they do know this, and thus the crackdown on every form of P2P imagineable. Thus I support the harsh anti-piracy measures: so be it, say I. If it swings too far (which it has) towards strictness, I believe that it will also correct itself. Maybe it won't, and maybe we will be registering everything with a centralized "Passport"-style service before using any product--but I don't think this is our future.
Instead of thinking of piracy as "free speech" or other nonsense, try and think of it as speeding in your car. If you're caught speeding, there's really nothing to it but getting a ticket. Correspondingly, if you are unhappy with "Big Media"s treatment of P2P, take it in stride; after all, it is illegal.
Maybe they shouldn't be hunting you down for downloading (allegedly) MP3's of songs you already own. But think of speeding tickets--they also give them out to speeders who go way above the limit, or go 70 in a school zone where your children attend. Yes, this analogy stretches to accommodate "serious crimes" which are also committed using the same service you are using.
The concept of "illegal but not unethical" was described to me in a Larry Niven novel, of all places--wherein he described smuggling as illegal but not unethical. In the same way, you don't have to feel bad (and you obviously don't) about bending/breaking the law. Though I still don't believe you're being honest about your adventures in P2P piracy, even you admit that your behavior is illegal by current law. Don't feel bad about it. BUT ADMIT THAT YOU'RE BREAKING THE LAW. You're not fighting the good fight; you're not fighting for freedom of speech as described in the first amendment of the Constitution. You're just downloading some files in a way which happens to be illegal.