Population decline; Might not be bad after all!

Although any nation needs a healthy growth of population for the nationalistic point of view, but the declining population in a country such as Russia couldn't be bad after all. I believe the government's role, alcohol/drug abuse (specially among male population), and emigration (due to lack of opportunities, corruption, and political oppression) are some of the contributers to the matter. But I can't imagine that a society would try to increase its population for the sake of nationalistic views, unless the government is behind it with some concrete agenda. I can think of Iran or some Arab countries that increased their birth rate significantly over a specific era, and almost all of them are not happy for what they did. To clarify my view, I must say that in a global view, in this day and age, decreasing one nation's population should not be a big concern even for the society itself. I believe birth and death rates are adjusted with socioeconomic and health status of any nation/society as a whole. I was reading in the Economist a few weeks ago that the west Europe's population (mostly in the Scandinavian countries) has started growing again after a sharp decline over the 1990's and that's all because of a change in ideas and values of families all due to changes in SES factors.