Better places to work than Afghanistan. I had 2 years there. Unless you have overseas experience it is difficult to get work there. And remember that the ISAF forces are moving out soon and people's safety is a real concern, especially °µÍø½ûÇøs.
As foreign forces move out, the probability of a civil war or general chaos is pretty high. It looks pretty grim at the moment; I see that being far worse in the near future. Without going into politics - the invasion was really badly planned stupidity that was always going to make things even worse than they were.