They were eradicated to begin with because when the Europeans got here, they just kept doing what they'd always done and people didn't understand that things were not infinite. Further, every wild animal is vicious. More people are probably injured by deer in car accidents than will ever be killed by wolves.

As to Bailey's point, it really seems like all these issues are mostly social. There are always those who are for or against and usually the issues are made up. Idaho has under 1,000 wolves and people hate them? I'd have to say that those people are morons. The wolf to people interaction has got to be so infrequent.