I'm still hoping for the revelation that BSG's Earth is actually "our Earth" (or that there's a "real Earth" which is our Earth) and that the whole series takes place in the far future. Maybe Kobol was actually Earth's colony and that 13th/Cylon tribe started to look for mankind's original homeworld when they left Kobol thousands of years ago?
That is my hope as well.
In fact, isn't there some early episode that has a scene where we look at Adama's military record and it lists the year as something like 25,000 years into the future?
However, the dates from Adama's military record possibly mean nothing... because we don't know what kind of calender system the Colonials use. It most certainly isn't our Common Era/Gregorian calender.