Sure, the original intent may have been to portray our possible future, but there is nothing in Trek that requires that it be our actual future.
Personally, I think its fun to create an alt-20th/21st century for Trek's past rather than just retconning things to fit reality, which is what Clarke did in later Space Odyssey books.
Hober Mallow wrote:
Sure, but shouldn't any new Trek be about the possibilities of our own future? Otherwise, doesn't it just become escapist fantasy?
Star Trek has always been escapist fantasy. And there is absolutely nothing wrong with that.
"Canon is only important to certain people because they have to cling to their knowledge of the minutiae. Open your mind! Be a Star Trek fan and open your mind and say, 'Where does Star Trek want to take me now'." - Leonard Nimoy