Therefore vs as a result

Can therefore and as a result be used interchangeably? if not, what is the difference? there are certain drawbacks to life outside the city.Firstly, because there are fewer people, one has a smaller number of friends. Moreover, entertainment, particularly in the evening, is difficult to find. Furthermore, the fact that there are fewer shops and services often means that there are fewer employment opportunities. As a result( or therefore) one may have to travel long distances to work elsewhere, and this can be extremely expensive. To sum up ,it can be seen that the country is more suitable for some than others. On the whole, it is often the best place for those who are retired or who have young children, As a result( or therefore), young, single people who are following a career and who want some excitement are better provided for by life in the city.