Maybe trust issues are part of the environment one grows up in. Here where we live in the country, we just started locking our doors a couple years ago, and were shocked that the world had come to that. Neighbors still look out for neighbors. I have never carried a gun when not hunting squirrels or game birds, and don't plan to....and no, I've never met a meth addict, and honestly don't care to.
I know there are bad people in the world, I hear about them every night on the news.
All I know is, in the 55 years I have been motorcycle touring the US, Canada and Europe, all the people that I have come into personal contact with have been good people, willing to stop and check on me if I am stopped on the side of the road, or more than willing to help with directions or suggestions. I find most people kind beyond expectations.
Even if someone would steal my helmet or jacket someday, it would be a disappointment, but still a minor inconvenience compared to the things that could happen to you in this world. I'd much prefer they took my helmet vs say holding me up at gunpoint and stealing my wallet.
The good in the world far outweighs the bad in my experience.