It's because as a whole we're a lot more powerful than we are as individuals. I have no problem with Ashcroft's theory of personal responsibility. I believe people ought to own their actions and own the direction of their lives. But I don't like to think of the government shirking its responsibility, either. While in and of itself, there is no problem with government devolving its duties to its citizens, I worry that it's an excuse for disengagement, a baby step away from responsibility.
Nothing is ever a substitute for experience.
You can believe the weather forecaster's proclamation of the coldest day of the year. But it isn't as meaningful until the wind chafes your face and burrows into your bones. If our laws aren't promoting the kind of culture we want, then perhaps there's some kind of short circuit between citizens and the lawmakers.