Been living in Vietnam for the last five years. It's the same way here. Maybe it's the Chinese influence?
For further reading on this I can highly recommend Steven Pinker's "Better Angels of Our Nature".
https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Natur...
I thought that thing is exclusive to China. Or at least like that, since I have a few people who got hit by vehicles but only injured, drivers don't even tries to finish off.
No wonder Vietnam have that similarity since they have been influenced by China for 1000 year.