The future will either be total collapse, about which there isn't too much to say, or we will all migrate into the Net, where everything will be totally different and yet somehow exactly the same as always. The reason SETI will never find anyone is because the Universe is boring, and all technologically advanced societies have turned inward. (Jesus could walk on the water, but I can fly! -- Jefferson Starship)
Will mankind even notice when Homo Sapiens goes extinct?