The main advantages of living in the country have to do with the fact that you are living in a less populated area. Because the area is less populated, there is generally more space. You can have a bigger yard for your house and your children can have more space in which to play. There is a lot of open area in which you can engage in leisure activities like sledding in the winter or fishing or hiking. In addition, there are not as many of the problems that come with urban life. There is generally less crime. Things are less noisy. You can see the stars at night. All of these sorts of “quality of life” factors are generally what make country living good.
The disadvantages of country living come from the fact that you are farm from many of the amenities of cities. There may not be much in the way of shopping that is available to you. You may have to drive a long way to be able to do something like going to a museum or to a musical performance or even to an airport. There will be many sorts of services that are not available to you because your area is not populated enough to support the people who perform those services.
Thus, country living involves a tradeoff between a more relaxed quality of life and a variety of inconveniences that come with being far from a population center.