I used to think that the fact that I never missed my parents when I was little proved that I had a wonderful, stable upbringing. After all, my mother was a psychologist and I read some books and they all said securely attached children don't miss their parents much.
I didn't miss them at all. Once, we were all away, as a class, for two weeks, at 7 years old. At some point, all the kids broke down and started crying, missing their parents. I tried to pretend I did too, but failed miserably. I guess I always knew I was different - I thought I was callous and cold at the time. Then I thought I was very securely attached. Now I believe otherwise.