I did a couple years in S Korea.

I thought it was amazing, loved every minute. Some people hate it.

If you're going because you see it as a way to get paid to go on vacation, (as many do) you might not like it. You will be totally immersed in a society that has a different way of, living, eating, speaking, thinking and doing. Some people cant handle that.

If you want to go because you want to have a cultural experience, do it. Its extremely worth it.

But remember that you have a job. Teaching. If you think you would hate teaching: DO NOT DO IT. Teaching is not for everyone.

You don't need to know the local language btw, so dont let that stop you. Some people spend years teaching and never learn. I would however, strongly reccomend learning the language. Its respectful to the culture that hosts you, and it is a valuable life skill. Just dont think you need to be good at it before you go. I knew almost no korean when I arrived