This happens because the social norm (in the US) is to avoid any conversation or subject matter that is even remotely negative. You can see it in every day inte

This happens because the social norm (in the US) is to avoid any conversation or subject matter that is even remotely negative. You can see it in every day interactions, people just can't handle criticism of any kind. Conversations must only have positive tones and people are socialized to avoid anything that might result in conflict. This has something to do with political correctness, which is now the status quo, but that's a different matter.