Without getting too preachy I'll just say it this way, if I haven't said it enough already
We've lost a vision for the future. Plain and simple. You show me where we capture that these days. That was what Horizons did and did it so incredibly. I wish I was old enough to have gone on Futurama II at the 1964 Worlds Fair, at that time imagine what the ride must have felt like. It gave a look into what the future might be like. Even more interesting is the 1939 Worlds Fair vision of the future, you know what year? 1960. It had a pure vision of what technology and brain-power could do for us. Imagine how disappointed a time traveler from then to now would probably be. Why did we lose that vision? Part of it is they didn't anticipate telecommunictions, the internet, iphones, etc.. Those sort of took the place of the focus on transportation. But there are certainly other reasons why we don't have a vision for the future.
I wish that Disney would put in attractions that would recapture that. I truly love Soarin but rides like Horizons captured something that had a much longer impact on me.