When talking about space, a lot of people conjecture what will happen in "this century"; I think you're forgetting just how long a century is, or rather, how much can change in one. 100 years is how long it took to go from the horse and buggy or the steam train to the first Moon landing. It's how long it took to get from the telegraph to the internet. A lot can happen in a century, and the changes of this century will no doubt make the last one look slow and stable by comparison. So don't write off the 21st Century yet, it's still just a baby and has a lot of living to do.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort