It's similar to when IT departments piggy-backed wanted equipment orders on Y2k correction budgets. Control over society and people is an extremely attractive power, whether done in the name of fear, safety, or cost control. Once a universal ID is in place, the number of entities that can ruin your life or steal your identity are drastically increased, and it's been made easier for them. And try going to court over every little injustice done to your records. Even if today's government is trying to do good, tomorrow's may not.
Time moves on, and what was considered good character yesterday is ridiculed today.
Society has not been embracing diversity or tolerance. The term terrorist can and will be twisted into broader definitions to cover a lot of ground, and eventually may include the voicing or writing of anti-government opinions. Don't expect the government to include itself in these rules. One example is the law enforcement's use of video cameras. The justification is that in public you should tolerate it, but anytime a police officer stops a car and sees a camera, the first thing they demand is that you turn it off.