You talk to people on planes?! You monster! ;)
Ha. I promise, I can read people pretty well and if they're not interested in talking I don't even start in. Trust me, I've had to put my head phones on a number of times on flights to dissuade the person next to me from speaking anymore.I think we do have some people who are striving for great things, but I don't see a culture of it. It's a shame, really.
It's all in who you associate with. If you were to step in to my shoes for a day and interact with the people my wife and I have chosen to cultivate friendships with, you would think the world was filled with dreamers. That said, I realize that there are many people that prefer to sit around and watch TV all day. But "dreaming" or having ambitions beyond your current station is not all that rare from my experience. -Thankfully.