>>723571120
Because once you escape the drivel that is hollywood, you begin to realize the far more entertaining thematic potency of bioengineered species refined by far superior intellects over thousands of years. Any civilization capable of conducting warfare on that level will have discovered metabolic systems that far exceed the current pathetic ones earth organisms are burdened with. For now it may be considered sci fi, but that is the untapped market the horror audience is subconsciously interested in: grotesque explorations of the bloody interactions between utterly inferior terrestrial bound species, grown weak after millions of years of easy evolutionary pressures on the paradise planet that is earth, versus those hardened by hellish fume, uncaring vacuum and savage scientists.
Why specifically? Well, as we see in the far superior LIFE (2017), the organism possesses almost innumerable metamorphic codes packed into some nearly unbreakable DNA format, allowing it to adapt to any situation its original bioengineers built it for. The primary interest should be whatever initial chemical sequence allows it to generate such innate energy even within a petri dish, the holy grail being some method to pull energy directly from quantum foam so that the organism can truly regenerate from anything anywhere. Only total atomic annihilation would negate it.
Long story short, earth monkey fascinated by nuclear powered space organisms slaughtering and replacing primitive metabolic powered earth organisms