Why do we always wait until it's too late?

You cannot allow yourself to live your life thinking that way or they win. There are still some good people out there. But in the meantime you will drive yourself crazy if you are constantly thinking that the person next to you is a threat, true it may be. But there isn't much we can do about it. Relax and try to enjoy life while you are young and still have one. Stay young and innocent but not naive.