Imagine having to quit your job right now to temporarily move to another town (possibly in another country) where you don’t know anybody or anything about the area. You start looking for a job, but no one wants to hire you because they know you won’t be sticking around for more than a year or two (maybe three). On top of that, your spouse was just sent halfway across the world for work and won’t be returning for a year. Now you’re alone in an unfamiliar town with no job, family or friends. Rinse and repeat every one to three years.