The biggest problem with "illegal copying" is copyright law, not the copying itself. The entire body of copyright law needs massive, wholesale revision to preserve the rights of the end-user and the actual creators; at the moment, all the power and authority lie with the corporate middlemen, at the expense of everyone else, and that cart's just careening down the slippery slope to Syrinx.
Personally? I don't indulge in illicit file sharing myself, for two reasons:
One: the media industry are such raging assholes about it, have the lawmakers under their thumb, and are more than willing to retroactively enforce new, more restrictive laws on whatever they might find lurking on your hard drive, even if it predates those laws.
Two: if someone, be it an individual artist or an international megacorporation, refuses to make their product available through any of the convenient, inexpensive distribution channels that I can access easily -- say, Cable On Demand, or Hulu, or whatever -- you know what? I don't need their product badly enough to break the law to get it.
I cannot emphasize that point strongly enough:
Illegal copying is not an act of rebellion. It's an act of submission. It's telling the big companies that their product is of such vital importance to you that you're willing to risk fines, net access, and jail time to get it.
Me? I'm not even willing to deal with minor irritations. Sure, I enjoy watching The Venture Brothers, but if it's a choice between staying up past midnight when I have to get up early on a Monday morning, or putting up with the stuttery, spazzy, chapter-skipping Adult Swim site, I'll just opt out entirely.