In a lot of ways, we're an older country now. We are the richest and most powerful, we're the establishment country, lol. We have been for the lifetimes of the vast majority of living americans. Such conditions aren't exactly the recipe for radical exceptionalism, are they?
Old Europe, especially Scandinavia + ~German countries, is much richer, safer, healthier, happier, more educated and you name it.
That's why we at most have 15-20% (with some exceptions) Trump'ish parties that have worked hard under many-many years to get there, despite terrible immigrations politics. And you've got Trump, coming from nowhere, who has descent chances to become the most powerful man in the world 
We are actually to rich to risk. But you... What the hell do you have to lose?
Fair enough.
There is an argument though, very popular among the US right wing, that this is only so because we finance your defense. European countries spend far less on their military than the US, even by percentage. Your militarizes have not seen combat in a very long time, and are generally regarded to be in poor condition.
Donald Trump has made noises about lessening our commitments to our European allies as a result of this. I guess he wants to spend the savings to boost our economy by building more trump towers. Regardless, a withdrawal of US security for Eastern, Northern, and Central Europe would create an immense power vaccuum.
Oh well. Good thing Sweden doesn't have a large, militaristic, historical rival close to it's borders. Certainly, not one that has a history of influencing political parties in neighboring nations with implied and actual use of military force. And definitely not one that recently tested Swedish naval defenses by running a nuclear submarine under their largest port.
Nah...you guys will be fine without us. Let the good times roll...
