When will it sink in?
It's simple. I am not a terrorist, therefore there is no reason or justification for you or anyone else storing details of my movements, my activities, my financial transactions or my contacts.
If that person over there is reasonably suspected of terrorist activities then the police should be able to ask a senior judge nicely (with their reasons, obviously) for an order permitting them to request that various bodies start recording details of that person's movements, activities and communications etc. and pass them to the police.
Is that so difficult to understand?
A law-abiding citizen.