GQ, I'm not trying to be ornery (although sometimes "it" just sneaks out...
) but there are several reasons why we haven't traveled overseas. For one, we actually prefer driving to flying. Himself is a generous 6' 2", my legs are exceedingly long for my stature, so neither one of us can travel comfortably in coach. Then there is the cost. First Class would be comfortable, but not to our budget. Last, the pilot is very unwilling to actually stop for me if I were to shout "look there! Can we stop and look around?" Himself and I enjoy the trip as much as the destination when we drive.
You mentioned that you haven't had the chance to visit the United States yet. As someone who has spent some "visiting time" in 34 states (as opposed to "pit stop time"), I can assure you that traveling in the United States affords you great opportunity to experience different cultures. Every region has its own distinct flavor, both food-wise and overall personality. English might be the common language in the US, but as a non-native living in MA for 15 years, I STILL have to ask the locals to translate what they are saying into "English".
I would love to visit Europe. Himself's aunt, who recently passed at the age of 96, had visited 117 countries all over the world. She was a single career woman. We've raised and college educated two children. Somehow I think we missed the chance to explore countries in person, but it's all good.