Costa Rica has so many things going for it, that it is hard to describe all of them in one short article. But that's not going to stop me from trying.
Activities
You can do almost anything you should do in Costa Rica. The beaches on the Nicoya Peninsula in Guanacaste Province in Northern Costa Rica are world renown for surfing and scenery, and an excellent place to catch some rays. https://www.discoverpuravida.com/five-things-to-do-in-dominical-costa-rica/ and ecologists will love Costa Rica for its rain forests, whale watching, sea turtle nesting beaches, and a bunch of other natural wonders. People that have more urbane tastes should be able to fill their days with shopping or museum going, and their nights visiting the arts or clubbing.
Climate
Costa Rica offers a wide range of climates, from tropical rain forest to temperate valley to frigid foothills; you can have your decision. The majority of the population of Costa Rica lives in the central valley at elevations of 3000-5000 feet above sea level, where in fact the air is cooler and drier compared to the humid, tropical beaches. The wonder of Costa Rica is that you can reside in the climate of one's choice, but be only a short drive from a completely different climate. For example, you can reside in the cooler, drier hills of Guanacaste Province and see the ocean and drive to the beach very quickly.
Cost of Living
Many expatriates move to Costa Rica for the low cost of living. It is possible to live very comfortably on $1500 per month, much less if your preferences are few. Housing, local food and services, and entertainment are much lower in Costa Rica than most other developed countries. For anyone who is on a fixed income or Social Security, it is possible to live much better in Costa Rica than you can in the usa or Europe. Living on the Nicoya Peninsula you might have fresh produce from the farmer's market for a fraction of what it could cost you back. You can go one step farther and buy your own farm and raise your own food. While the necessities of life are inexpensive, the luxuries and most imports are pricey, because of high import duties imposed by the federal government.
Stable Government
The Costa Rican government is really a stable democracy with a history of excellent social programs and a pro business and development policy. The country welcomes tourists and immigrants, both for the revenue they generate and the income that they produce for the Costa Rican Nationals. The Government has embarked on an ambitious infrastructure program-building roads to remote areas, developing beachfront property, and promoting eco-tourism to preserve the country's natural splendor. In the Gold Coast region of Guanacaste, developers are building world class hotels and resorts, increasing property values in the complete region, as tourists and immigrants are realizing the attraction of the region.
Medical Care
Costa Rica has advanced medical facilities in the major cities and modern clinics in lots of of the rural areas. Citizens have their choice of private insurance or taking part in the National Healthcare System, both of which are much less that comparable coverage in the US. Liberia, in the Northern region of the country, has modern medical facilities which serve the residents of Guanacaste Province.
Easy Access
Costa Rica is in once zone as Chicago and Dallas, so jet lag is not an issue for most Americans. With daily flights from two airfields, most cities in america are less than a 6 hour flight away. Phone service and access to the internet can keep you in touch with family and business associates, so that you can talk to anyone whenever. You may be living in an exotic tropical paradise, nonetheless it can feel like you're back home (or can be, if you want to).
So, last but not least living in Costa Rica: Plenty to do, great climate, cheaper to call home, friendly government, great health care, and an easy task to reach. Sounds like an excellent place to live. Because the Costa Ricans say, "Pura Vida" the 'pure life'. I cannot argue with that.