I actually saw something sort of kind of related to this discussion.....
http://www.spikedhumor.com/articles/138855/Ted_Talks_Earth_in_it_s_Final_Century.html
It's crazy to think that if we are half way through in the timeline of our galaxies lifespan, starting life as simple single cell organisms to evolve to what we are today, what will the human race be in another 2.5-3 billion years?