This is like saying because you've never needed to have a fire put out, we should get rid of the fire department. Nevermind that they often do things like fire

This is like saying because you've never needed to have a fire put out, we should get rid of the fire department. Nevermind that they often do things like fire safety, prevention, first aid, and community outreach and other things you are likely to generally benefit from. The same with the CDC. You might not have needed an intervention, but you've probably gained in general from disease prevention efforts, research, education, and so on. The benefits of military are slightly more muddled, though most won't argue to get rid of all of it. You might not use the roads there, but I'm guessing many of the things you consume have used them.