If you're going to look at lists over what countries you should live in, it's better to look up a proper list based on criteria you can understand rather than the list made by the people running some website who don't explain to you how they got their numbers. A pretty official index is United Nation's Human Development Index which includes stuff like standards of living and education.
List of countries by Human Development Index - Wikipedia, the free encyclopedia
Iceland is not that great a country to live in at the moment because they got hit terribly hard by the economic crisis. The banks there had given out a huge number of loans among other things, so now a lot of Icelanders have moved to Norway. Before that, it was good.
edit :
That guy is trying too hard to be a dick. If he wants to troll, he could do it better by being less obvious.