Is it because we have had to take care of them like an aging senile old parent?
Ha! You know we'd be a lot better off without you, the simple fact is that we know you are powerful, but we also know you are young and foolish - like a toddler who has somehow got hold of a shotgun. We step in to prevent you making even bigger mistakes than you already do, we're not senile, you're just too young to recognise wisdom when you see it.
Is it because we took the dregs of British society and created a nation that the U.K. was too oppressive to allow and we have embarrassed them?
Um, i seem to remember that the bulk of the people who founded the colonies were either religious fanatics that we didn't particularly want, or Irish fleeing famine and economic disaster.
Is it because we whipped them in the Revolutionary war and saved them in WWII?
OK, here's a common American misconception.
Firstly, the reason you "won" your war of independence (you must realise you'd be far better off as a Commonwealth nation) is because we had to ship our men across the Atlantic on a grueling two month journey while yours were taking it easy at home.
We fought using traditional warfare, while your guys fought using dirty guerrilla warfare. We had our army and navy spread across our expansive Empire, while your men had only one target - we had 36,000 exhausted men who had to both defeat, capture and retain settlements while you had 250,000 local militia with the local populations backing.
I'm surprised anyone could be proud of such a victory.
We also never seem to get any thanks for defeating, practically single handed, the Hitler of the 19th Century - Napoleon I. If it weren't for us
you'd all be speaking French right now and under the rule of the French Empire.
And of course, it was not the rather late intervention of the Americans in WWII that won the war, but rather
the Soviets who were decisive in victory in Europe.
And i know it's a joke thread, but frankly the overwhelming smugness of the general American attitude to their pseudo-history quite frequently makes me sick to my stomach.