When I went to sleep after the Curiosity landing, I had a dream that I was on Mars with a group of colonists. I "overheard" someone say "this is the first child born outside of Earth". Imagining someone who is a citizen (by virtue of their parents) of a country they've never seen, on a planet they've never visited... I woke up in wonderment that this is going to happen some day. I hope I'm around to see it.