Where should we move?

Imagine that a friend is planning to marry and his/her intended is from another country __________ [fill in one of the following countries: Sweden, Republic of Korea, Israel, Ireland, Japan or Australia]. The couple needs to decide whether to remain the US or to move to this country. Compare GDP/capita for each country as well as the United Nation Human Development Indicator at http://hdr.undp.org/default.cfm
Based on this information prepare a list of reasons:

a) Why should the couple remain in the US?
b) Why should the couple move to the other country?
c) What are the problems with using GDP/capita in their decision?
d) What are the problems with using the UN Human Development Indicator in their decision?