I entirely agree with complete anonymity. It is definitely a weapon - to have a wide network where you can do anything without anyone knowing who you are? Unbelievably powerful. And of course, since it is a widely available weapon, people will use it both for good and evil. That is true for all technologies.

However, there are two reasons I say that we do need such a completely, impenetrably anonymous network: first, there are legitimate people who need it, and hell with the way it's going I would not be surprised if many people in the US would already need such an option because they've been classified as whatever they call dissidents today, simply because of beliefs. As I said, such a thing is definitely a weapon, and one that if done properly could overthrow governments if needed (and of course, that's still for the better and the worse).

Second reason? Bad people will always find a way to do bad things. There will always be distribution of child porn, hard drugs and weapons. There will always be places to hire hitmen from. All that these networks do is expose, to us folks unsavvy of the black markets, to these things - it makes it easier, but most likely it shows us that it truly does exist. It makes the black market available to any simple Joe. And that's something that is almost never mentioned in those talks - and most governments want to keep it that way. "These networks enable bad people, therefore these networks should not exist". It makes people willing to trade off the freedom of anonymity for the safety of at least not seeing these monstrosities. And look where that thinking got the US. "Those who trade freedom for safety will get neither". Bad people will always find ways to do what they want if they work hard enough at it. We don't get too many chances at having a safe network.

In my opinion, such networks are the new nuclear power: should we ban nuclear reactors because nuclear bombs exist, or Fukushima/Chernobyl happened?