Assuming there are no natural or human made disasters, how long can we survive before evolution "takes us out?" Will we be around to witness the Sun expand off the Main Sequence and cook us? Will we evolve into something quite different or just die out?
I've read about sperm counts dropping around the world, mostly in industrialized countries. Seems natural, I've never believed humans were meant to be crowded together in cities. Maybe that's nature's way of marking us for extinction or taking us back to where we should be. Barring an asteroid with our name on it or nuking ourselves, I believe we are here for the long haul.
What do the more learned folks here think?