Dual citizen?

Today we go to the U.S. consulate to register Dylan as a U.S. citizen, get his Social Security number and apply for his U.S. passport. People keep asking me if he will be a "dual citizen." From everything I've read, dual citizenship doesn't really exist. Yes, he is both an Italian citizen and a U.S. citizen. But there's no Italian-American authority that doles out "dual citizenship." Whatever that is. Italy and the U.S. don't really care what other citizenship Dylan has and don't communicate on the matter. For each country, he is "theirs" and that's that. More than anything, it's just a convenience. If he wants to go on vacation to Cuba or travel somewhere where there's particular anti-American sentiment, he'd use the Italian passport. If he wants to get through customs faster going to the U.S., he'll use the American passport. And, obviously, he's legal to live in both places. One strange rule is that in order for him to pass American citizenship on to his children, he will have to live in the U.S. for at least five years and four of those years after the age of 14. That's kind of random. I'm eligible for Italian citizenship but have yet to apply. Again, it'd be a convenience for certain things. It'd mean I could zip through the line for "EU citizens" faster in the airport when traveling to Europe. It would also mean I'd be legal to live and work in all of Europe as opposed to just Italy (though where am I moving?). And I'd also be able to vote in Italy. Mom's up early to finish work because the whole morning will be taken up at the consulate. Tonight I have a work-related dinner and will leave Dylan alone (OK, with papà) at night for the first time. I've already made up strict instructions as to how and when he should get to bed, but why do I have this feeling that I'll come home to find him still up and in front of the TV watching the European soccer semifinals?