Curiosity: North Korea

I have sometimes wondered if living in North Korea would be fun.

I know that they have a absolute and scary dictator named Kim Jong Un. 

I also know that North Korea is very isolated and does not let anyone in the country have connections outside of North Korea. 

But I cant figure out why the do not want to open to the world and connect with their Southern Brethren and instead invoke war and nuclear destruction on other countries.

Even so, I will always stay away from North Korea and never enter the country for my safety.