Easily within 10 years.
The real question is, will it hit $10,000?
Or even $100,000?
My guess is yes and yes, but not for another 30-50 years.
I agree, I believe so long as bitcoin is the generally accepted universal money then it will be worth $100,000 if the overall value of the 21 Million bitcoins reach about $2 trillion USD. Which really wouldn't surprise me considering that's $2 trillion USD worth considering all nations have a GDP of $71 Trillion.
http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)