I lived in Korea for 5 years. Here's what happened when I came home to Nebraska

This is an almost text-book example of reverse culture shock, where after living abroad you take on enough of the cultural norms, that home seems almost alien to you.

I'd just like to protest the posting of articles with clickbait headlines.

tl;dr<p>The author was away from home for so long that his new territory felt more like home.<p>Confused and overwhelmed at mixed feelings regarding his return, he felt homesick for the alien culture that he came to enjoy so much, while he was travelling abroad.<p>He was thus disappointed by the inversion of feelings he was originally expecting. He is not happy about returning to America.