Interesting thread.
I have worked with expats in the expatriate industry for the last 7 years. We deal with expats in Central America, South America, Asia, Europe and the Middle East.
Our advice is always the same, go live there for 1 year and see what you think. We even require our expats to experience localization classes so thier kids can get acclimated to the schools, customs, etc.).
A large portion of expats do not make it in any country, not just Costa Rica. The differences are usually more that the average person is used to and can wear on your marriage, etc.
We see this even when a westerner goes to another western-type country (i.e UK, Australia, etc.).
Nothing to be ashamed of if you can’t integrate into the new country, it is very common. Immerse yourself for 1 year and then make a decision.
5,000+ unique articles, valuable E-Books, dozens of useful reports, 300+ online videos, biographies of trusted, reference-checked bilingual Realtors