What
Starkiller will develop a taste for weed and go on a prolonged journey in which he slowly takes over the Mexican cartels, uniting them together, producing an unstoppable weed powerhouse, which will create mass quantities of weed in the rush to make the ultimate joint.
In doing so the cartel will expand unbelievably, distributing weed all around the world until the large majority of the global population is using weed on a regular basis, including world leaders.
Eventually though in 2035 an experimental strain will accidentally be released, which upon consumption causes extreme paranoia.
This strain reaches top government officials in the US, UK, China, Russia and India, all of who in a seriously bad trip initiate the launch of nuclear warheads at each other, thereby destroying the world and delivering us into a nuclear apocalypse.
Come on, it's obvious.