(December 6, 2014 at 8:32 pm)Cthulhu Dreaming Wrote: I would think that overpopulation would be a huge motivator to find more space. (Though we still have a large number of problems to solve, not the least of which is actually getting there. Then there's the fact that we don't have anywhere to go *to* yet.)
Overpopulation would be a reason for major wars. As well as dwindling ressources. Don't kid yourself. Mankind will never unite as long as there isn't an outside threat for the planet. And that's a dinosaur killer rather than an alien invasion.