✔ 最佳答案
There is ONE reason I don't want a Brexit; if the UK leaves and Turkey becomes an EU member, they'll have almost 18 % of the EU population.
I really don't want Turkey to join the EU (actually, I didn't want a bunch of other countries to join BUT WE NEVER GOT ASKED, DID WE!) but fear they will eventually (dang Merkel and her ... oh well, never mind) and they'll be WAY too influential.
You are right about the outbreeding, look at birthing rates (1.9 for Spain, Greece, Germany and others) and what they should be (2.1) to have a stable population figure ..... only in Africa and parts of Asia do you have high rates nowadays.