It sure is easier without the kids... We did it the first time from SA to USA, without kids... (well I fell pg just 5 weeks before we left, but that doesnt count in this discussion). It was so much easier. Only two people's papers to get. We were only two adults who don't leave things all over the place, so it was easier to keep the house in prestine condition to sell it. We didn't have to worry about anybody else's emotional feelings.
Now it's so different. We have an eight yr old who is so sensitive and had been acting up at school, because he feels angry that we cannot live in the land of his birth. He's insecure because he doesn't know what to expect in NZ.... what will school be like, will he be able to understand the other kids? Will they understand him? Will his friends here remember him? He will miss them... for a long time, without our knowledge,, he was crying himself to sleep because we were not taking our cat along... now we are and he is so happy... $3000 extra for the happiness of my children. My 6yr old has less of an idea of what is really going on... she doesn't seem to really understand the distance involved, and the full implications. But it's hard to keep the house clean with their toys keeping on migrating to the lounge.