Other people have noted this.  Here's a quote from Salman Rushdie, who was concerned with the situation of the migrant when he wrote Satanic Verses.

"The act of migration puts into crisis everything about the migrating individual or group, everything about identity and selfhood and culture and belief."  

The situation is complicated by a lot of other factors, but I think what Rushdie says applies, at least to some extent, to people who have been moved about as children.  Jerry was born in Oklahoma and moved several times when he was younger.  I wasn't born in Oklahoma, but I moved a lot also, as did several of our other friends.