If I dwell on it too much, it slightly depresses me that the thing I have been interested in the most, and most consistently, during my lifetime (space) will still be so far from being understood, much less explored or even conquered, by the time I die. I was born 3 months before the moon landing, and while obviously I don't remember it, it was a big deal as I was growing up. I could not have imagined that we'd still be this far from space travel. Hell, I just watched Blade Runner again the other day, and the date that things are taking place in that movie are 2019. Obviously it is sci-fi, but still, the hopes for the future of space travel and exploration were so huge a few decades ago. Forty years ago it was all but a given that we'd have flying cars by now. While that was obviously a bit optimistic, we aren't even close to having the power plants/engines necessary for such things, and it is unlikely we'll even have them in another forty years unless public and political opinion swings drastically back towards the research side of things.
Sometimes I almost wish we did get attacked by (a very small contingent of) aliens so we'd be forced to shit or get off the pot. You know that if we were forced to invent actual spacecraft propulsion systems like we've seen in so many sci-fi shows (Battlestar Galactica, Babylon 5, whatever), we'd probably solve the world's energy crisis (and likely climate change as well) along with it. But no, we can't have that because all the politicians care about is being re-elected, not actually furthering science and/or society in any way.
Yeah, I'm rustled, because it bums me out, that's all.