When I was a kid (read as like 3 years old all the way up through high school), being an astronaut was on the top of my list of "things I want to be when I grow up".
My parents took me to the planetarium and science center several times a year (we'd have gone every weekend if it was my choice), I went to space lectures and even went so far as an astrophysics camp at USC one summer.
I did not wind up becoming an astronaut. Somewhere I realized that between throwing up from motion sickness in the car, to not being in peak physical form, that I probably wasn't destined for outer space. Still, there was that dream in me and it never really went away.
Seeing the movie "Gravity" stressed me the frack out.