What are some common things that you really don't understand?

Many drivers on the road don't drive seriously. Before driving, I thought most drivers were serious. After all, this is a matter of life and death. But after driving for a while, I found that many drivers didn't drive seriously at all. For example, in the case of very good road conditions, a car is walking very slowly. I saw it when I passed by: eating, talking to the co-pilot, looking down at the mobile phone; As for the callers, there are even more. Let's take the feeling that the turn signal suddenly merges. It is really hard for me to understand that these people simply give their lives to God and others when driving.