If you don't love languages, stay home. The cost of linguistically staying home: Mark Twain said nobody knows his or her own language until learning another. (https://medium.com/illumination-curated/life-is-too-short-to-learn-german-b561a5c8fc05?source=post_stats_page----------------------------------------)

If you're incurious about history you won't understand what you see when you go abroad.

If you're incurious about the history of other cultures, stay home.

Stay home if you can't live with other peoples' social norms, relationship with time, authority, power distance, hierarchy and sexual values.

Stay home if you can't live with the idea that your own country isn't the best at everything.

Stay home if you're addicted to the emotional power of complaint.

Sixteen years in Italy taught me that Italians' priorities about bella figura, clothing, hierarchy, the law and contracts and work are exactly the reverse of most Americans' (with a Milanese exception).

Expatriation is jazz, not classical. You have to enjoy improvisation. Whatever your plan is, plan on seeing it disrupted by unexpected opportunity you'd never have at home.

In 1999 4m Americans lived abroad. Now: 9m. As the US turned into a plutocrats' plantation, the American dream moved abroad. I had more entrepreneurial and academic opportunity in Italy and Latvia than I would have had in the USA.