I didn't do a good enough job with the analogy. The main problem I want to illustrate is that if the key falls into the wrong hands (which is extremely easy to

I didn't do a good enough job with the analogy. The main problem I want to illustrate is that if the key falls into the wrong hands (which is extremely easy to do), then anyone else can easily enter anyone's home. There are two main issues: government abusing its power, and weakening security of everybody. I meant to focus more on the second.