Am hopeful it won't be for a good while yet 
But with the whole world being so uncertain at the moment, with climate change and resource wars and mass migration on the horizon, I guess who knows what the coming decades could be like?
Hopefully though human ingenuity can find ways of muddling along as long as possible. If we can't, and if in 100 years high wet bulb temperatures and flooding and antimicrobial resistance has pretty much whittled down half or more of the world's population - do you think then the remaining people would set aside geopolitical differences? To get their smartest people working together to solve environmental problems? And with the rich everywhere pitching in resources?
Or do you think rich countries will just continue to try to hog resources until the bitter end of humanity?