It's not surprising that we Americans mix up satire and irony, since we apparently don't "get" irony, according to popular lore. 
Is that actually true? I've heard that particular bit of folk 'wisdom' time and time again, I'm curious to know if it really is the case. On a similar line, people say that the Germans have no sense of humour, having lived there for a year, I can say with certainty that it's not true 
Well, any generalization is dangerous. The greatest ironist in history, Mark Twain, was American. However, although his work was popular, it's unclear whether he exerted much influence on society. If he had, his work wouldn't still be funny today.
With the caveat in place: I have observed that Americans (as a generality) tend to take themselves far too seriously far too much of the time. There's a sense of superiority built into our culture that really gets on my nerves sometimes. I personally think that getting knocked out of the "#1 superpower" position (which is inevitable in 10 to 15 years) may actually be
good for our culture, assuming we manage to take it with a thread of grace and don't implode over it.
That's what I think of American culture as a fuzzy blob. Within that culture, there are a great many subcultures who don't take themselves too seriously, and many many
many people. I like those people. I try to be one.
I do miss irony sometimes, but it tends to be from a particular sort of overfocus. I have a strange tendency to take things literally when they weren't meant that way. Might be from reading too much SF. >8->