Yes, I think you need to bring it all with you to be a whole person, tungsind, melancholy, sadness right beside joy and laughter.

I am not sure about how this is working in US culture, I only know it from a bit of travelling and art. I have meet quite a few (for some reason always New Yorkers) who sport the attitude you describe and who give the impression of something broken, but I have meet many other Americans who are more nuanced. If I should generalise I would say that as a whole people from the US seems naive to me. It might be part of what you describe.