The threat of being killed by a terrorist is less than that of being killed by falling over in the bath. It does seem bewildering that we are taking extreme invasive measures to combat terrorism and none at all to combat bath deaths.
The cost of combating terrorism is not just billions of dollars. It now also involves the complete surrender of our privacy, with the government now legislating to hoover up all phone, email and internet data. If the government can do that surely they should also have a team of inspectors who are licensed to burst into your bathroom at any time to make sure you are using your bath in a correct manner.