Adheres fervently to action-horror movie formula

Is there a law? A civic code, a statute, an ethical tenet, what? I am so sick of action/horror/sci-fi flicks following the same tired storyline formula. What's worse, it's a premise that is absolutely nonsensical in the first place. And this occurs in big-budget releases as well as B and C level straight-to-cable/video schlockfests like this one.
Here's the setup: Some unknown (or known only to a few shadowy secret government types) threat wipes out a: town in the boonies somewhere; colony on an extra-terrestrial planet; in the case of this movie, university at a town in the boonies somewhere, possibly on an alien planet. This threat can variously be: zombies; vampires; aliens; a heretofore unknown species(possibly created in a lab somewhere); mutation of a known species(possibly created in a lab somewhere); alien zombies; mutant vampires; mutant alien zombie vampires (possibly created in a lab somewhere); or jehovah's witnesses. Regardless, this threat has the potential to wipe out humanity, either due to physical and/or intellectual superiority in the case of aliens or a new species, or as a result of "conversion" in the case of zombies or vampires.
Now, naturally, in the face of the potential extinction or zombification of mankind, the geniuses in the government in charge of this sort of thing don't choose to confront the threat with every single military and scientific resource they possess, naw, there'd be too much paperwork involved with that; they invariably make the call to send in a "crack team" of, mmmm, maybe about ten folks - yeah, that should be good to confront the humanity-wiping-out aliens/vampires/zombies. Gee, Stan, on second thought, maybe ten is too many, what's our budget looking like?
Just as inevitably, these ten (or maybe seven if it's near the end of the fiscal year) intrepid souls who represent humanity's best and last hope for survival, who are the absolute best of the best, our country's (or planet's) finest... are a bunch of effing idiots. Or, I guess, just Hollywood cardboard caricatures of stereotypes. Seriously, I'm watching HOTD 2, and these a-holes don't have a clue what the hell they're doing. First casualty - some chico bad-ass who missed the briefing that hand-to-hand combat with carriers of an infectious zombie plague is a bad idea. And I love the male lead's advice to the grunts; "stay out of the shadows". Okay, I'll do that, which makes it awesome that we're running this mission in the middle of the night.
So, anyway, the handful-of-humanity-savers archetypes: the smart tough hot chick female lead (played in this movie by whatever-her-name-is), the wisecracking not-quite-as-smart-as-the-female-lead non-threateningly-good-looking male lead (played here by some guy who looks like Borat - wait, is that Borat?), the expendable other tough hot chick who has to die(filled out nicely by Victoria Pratt), the gung-ho but clueless jarhead sargeant type (lately overwhelmingly played by rappers-turned-actors as in this movie), one or two more gung ho expendable black guys, the a-hole complete sociopath you can't wait to see buy the farm and wonder how he got on the world-saving crew(played here by some guy who looks like the guy I can't remember his name who played in the "Re-Animator" movie), and, of course, one or two green rookies. Because, you know, when the fate of humanity hangs in the balance... for god's sake, send in the newbies. You can't buy that kind of training! Not to mention, that's one hell of a resume builder for their post-military career... oops, oh wait, they're not going to survive this mission, never mind. And yet, somehow, despite the incompetence of the entire team and the male and female leads being distracted from the task at hand by all their formulaic flirting and sexual tension and whatnot, things always seem to work out.

Vae Victis