I tried not to let my four children know how much I would miss them when they all went off to uni, and did my bit by ferrying them and their friends around the country to check out the various campuses. Then, blow me down, each of them decided to study locally and stayed at home! When my daughter said she was going to Australia on an open ticket, I encouraged her to spread her wings and said that if she wanted to live there I would look forward to visiting for weeks at a time, then she returned home three weeks later. When my other daughter left home to share with a friend, she was back within a few months.
In the end, I was ready to nail planks across the front door so they couldn't get back in! They all still live quite near, which is great for me, but I would have happily trailed to the other side of the world to spend time with them, if need be 