California has the nicest weather in the world. You can ski, golf and surf in one day.

But all of it do not count if you don't have a good job. When you retire having  kids and friends 

nearby is the most important consideration. 
 

Living cost in Korea is very low if you live like ordinary Koreans do. But if you want to 

maintain American living standard in Korea, you have to spend a lot of money.