  Which immigration will not solveâ¦â¦   There was a study done on this question, taking South Korea as the example, by David Coleman, a demographer for the Royal Society, entitled: Replacement migration, or why everyone is going to have to live in Korea. Unfortunately the link below is dead, I donât know if the report is still online (it was published in 2001).      The conclusion was that for South Korea to support its ageing population by immigration would, in effect, require the whole population of the planet, as of 2001, to be resident in South Korea by 2050.   the declining birth rate of japan and the aging population is such a big problem that i am really scared for my countries future :(..  We will have less and less tax payers, i dont see what we can do about this do you have any ideas? I know it would be the same in europe AND USA (whites also have declining birth rate) but youre tax payers arent decreasing because of immigration. I do NOT want to open up to immigration for japan but, i think either way is a lose-lose for japan. I really think our time in the sun is over now.  One route is let in immigrants, the other one is to keep increasing debt with few and fewer tax payer :(  Hi Ninja,    I know we started off on the wrong foor, but let's start over again. ãããããé¡ããã¾ãã    A shrinking tax base isn't so much a problem if you can keep public works and social welfare under control. I know that Western countries have their own problems, but let's not get into them here and keep the focus on Japan, which this thread is about.    You should look into how much Japan spends for roads as compared to the US, UK and Germany. For the relatively low number of kilometers of roadway that Japan has, it spends the most amount of money on roads of any country mentioned above. The quasi-governmental companies (look at the highway corporation for a prime example) that are run by former bureaucrats and who give back-handers to bureaucrats still in power in order to keep the money flowing their way are the primary reason why Japan's coffers are starting to run dry. Japan has the highest highway tolls in the world even though most of the roads have been paid for many times over.    Public construction is the other big pork area that is bleeding your country dry. Call the bureaucrats into account, remove the source of their funding and power, and I'll bet that your future outlook isn't as bleak as it currently appears to be.    In the west, politicians and the courts are ruining our countries. In Japan, the bureaucrats are ruining yours.