We emigrated to NZ in my teens: my dad could get a promotion more quickly, the oil crisis was happening and as former South Africans, my parents were attracted to the idea of an "outdoors" lifestyle for my brother and me.
We came back 2 years later. 
Dad even had to pay back some money to the hospital as they had paid our removal costs and he was supposed to stay a minimum of 3 years. But they came back when they did for the sake of my education as even coming back "early", we arrived only 6 months before my "O" grades, so I had to work really hard to catch up 
If they'd gone to NZ directly from SA, they'd probably have settled but having got used to the UK, they found NZ (especially small town NZ - we went to New Plymouth) too parochial and insular. For them, the last straw was when a general election was fought and won on the basis that the rugby team would be able to tour South Africa with the government's blessing
.
I had sulked for a year when we went as at 13, I hadn't wanted to leave my school friends. I sulked for another year (and was better at it
) when we came back as I didn't want to leave my school friends ..... 
However, I did come (took a few years) to understand and agree with my parents' reasoning.
So effectively, I have emigrated 3 times in my life time 