Just because Star Wars had a trilogy doesn't mean Earth has to.
WWII yielded a device that has largely been responsible for preventing a third
instalment in the last 72 years. The bomb!
We have since entered a new century and nothing has started in this one thus far.
You must remember that advancements in living conditions has made life far more worth living
for the masses than in any other time in existence (that we know of) and this fact as well as the ultimate deterrent mentioned earlier has allowed us to enjoy a long period of tranquillity and realise how much better it is that way.
I think a slow degeneration of living conditions and societal values is the biggest threat of all and power going to the wrong hands.
BTW, it was Emma Thompson you were thinking of Cyberjack, not Emma Stone of Easy A and La La land fame.
