I disagree. A free and democratic state relies on the state trusting the majority of citizens to act in a responsible and reasonable manner, which most people do.
DNA collection could lead to abuses as yet unforeseen. For example, what would happen if a major political figure became ill and your child's DNA held the key to a cure. Would it be right of the state to hound an individual, or even compel an individual to assist in the medical treatment of the 'worthy' individual at the possible expense of the 'lesser' citizen.
I accept my example is an extreme one, but I have always believed people have a responsibility to limit, whenever possible, the intrusion of the state into our lives. I am also against the use of cameras in all High Streets and would rather see a more focussed use in high crime areas. If the crime moves, so should the cameras.
My viewpoint may appear naive in a modern world, but I would rather fight and struggle against a '1984' scenario where people sheepishly accept the slow transformation of government from a legitimate voice of the people into a clandestine spy upon the people.