Have just read an interesting story on English teachers living abroad. It seems that more and more teachers are opting to spend more time teaching abroad than their predecessors.
The internet, cheap phonecalls and job security teaching English are the major reasons for this trend.
I myself, have been teaching now for 18 months. The first 3 months were the toughest, and I didn't think I would survive for a full 12 months. But here I am 18 months later.
Teaching is fun 
, and now I have no timeframe for when I give it up.