I don't like the better-safe-than-sorry argument when it comes to security. I think it leads to bad policy and bad decisions. I've been thinking about this after I read a story[1] about a family that has been told that they cannot let their young kids ride a city bus by themselves. It's a similar argument - the value of kids gaining independence is big and the risk of something atrocious happening is tiny.
[1]:https://www.thestar.com/news/canada/2017/09/06/a-dad-in-bc-l...