If the movies say it, it must be true.
Gonna delve back into the realm of action movies again. They say write what you know, and I know action movies. You don't mind.
So, every action movie needs a bad guy, right? Of course, because then it's just a bunch of meaningless explosions and death, or, as I like to think of it, Armageddon. But, The Movie Gods are lazy deities, and rather than craft stories that show the villain's motivations, they'd rather have a full bore monologue before the final confrontation. And this usually happens right when the bad guy has the good guy at gun point. And rather than do the logical thing and just shoot his opponent, the villain will usually milk the situation for everything it's worth and talk, giving the good guy plenty of time to find an escape.
Let's think. In Goldeneye, Trevelyan has Bond at gunpoint, and rather than shoot the double o, he pulls out some bullshit line, giving James the window of opportunity to kick out the floor from under him and escape. In Desperado, the Mariachi is cornered by Bucho, and all seems lost. But, Bucho would rather talk about some bullshit, and the Mariachi eventually gets fed up and blows him away. Every Scream movie ends with this exact scenario, sometimes with the villains behaving like even bigger turkeys and actually causing harm to themselves. District 9 is the worst offender of all. Wikus is cornered by Koobus, who proceeds to talk about how he is going to kill him, rather than just doing it.
Jesus, villains are friggin' stupid!
The Lesson: Villains are dumb! They'll have you cornered and will not finish the job. Don't worry. You'll have plenty of time to figure out ways to defeat them, whether it's dropping them off a satellite dish, having your alien cronies take them out, or with good, old fashioned lead. You're better than them!