I've lived in three "foreign" countries and personally, I find it fascinating to just be able to compare and contrast the different life styles. It does completely change your outlook on life and people - if you allow it to.

There are plenty of expats who spend their entire time overseas complaining about the things that aren't like "back home." And what's worse, when they do finally move back home, they find that things have changed in their absence, so they they aren't necessarily happy to be back. If they had stayed where they were, they would have changed along with everything else and never would have noticed the differences.

Living the expat life - for a while, or permanently - is an adventure. Sometimes it's darned annoying and even inconvenient. But it's always a learning experience. And frankly, once you have some genuine "international experience" on your CV, there are lots of interesting opportunities that pop up - even if you go back home after a few years.
Cheers,
Bev