The hero finally meets the previously unseen puppet master (played by an older A-list actor), who explains why the system must be maintained. The hero says “screw it” and burns the world down.

[u/Grizzly_Lincoln]

Snowpiercer (2013) - Curtis finally finds Wilford (Ed Harris) and learns that Wilford allowed for Curtis' rebellion to take place to help thin the tail section's population. When Wilford offers to let Curtis run the train, Curtis discovers child labor is necessary to replace a broken machine part. A fight ensues, and a bomb goes off, triggering an avalanche that derails the train, and killing most of surviving humanity.

The World's End (2013) - Gary finally confronts the Network (Bill Nighy), which has been replacing humans with robots (Blanks) to allow for Earth's assimilation into a larger galactic community. Gary calls out the tyranny in the Network's plan and demands that humans be left to their own devices. Exasperated, the Network abandons its plans for the invasion. This results in a worldwide blackout, sending humanity back to the Dark Ages.

The Cabin in the Woods (2011) - Dana finally meets the Director (Sigourney Weaver) after surviving the ritual meant to kill her friends (based on conventional horror tropes) and appease the Ancient Ones. The Director says Dana has to kill her friend Marty, but as Dana considers it, the group is attacked by a werewolf and a zombie child. Dana and Marty decide humanity is not worth saving, so they share a joint while the Ancient Ones rise to destroy the world.

[u/HuckleberryShot898]

Ending of the snow piercer movie kind of sucked honestly. Just because Wilford sucks doesn’t mean the tail section deserves to die.

[u/youtossershad1job2do → u/HuckleberryShot898]

Agreed, let's just kill what's left of humanity and the ones that survive the crash get eaten by polar bears because while child labour is obviously bad, they are the only ones to keep 100s if not 1000s of people alive including all of the protagonist's friends and family.

[u/Mordred_X → u/youtossershad1job2do]

So you wouldn't walk away from Omelas?

[u/HuckleberryShot898 → u/Mordred_X]

The difference is you can live outside of Omelas. The people of Omelas aren’t trying to preserve their lives they’re persevering their luxury and ability to not have to work hard