I suspect the science fiction movies of the last couple decades are correct when they depict alien life in hideous spider-like forms. The superior body structure of arachnids, along with their freakish talent for spinning webs, makes their presence elsewhere in the universe seem likely.
I admire spiders so much that I’m reluctant to exterminate them when I encounter them in my home. I’ll quickly smash a black widow if it brazenly scuttles across the floor in plain sight. And any creature that dares approach my bed is slaughtered without mercy.
Yet I’m reluctant to murder the spiders I find in remote corners of my home. I figure that a spider doing business in my attic or unfinished basement might be helping the cause by eating crickets and rolly polly bugs.
Maybe the evil aliens will take that into account when they finally attack Earth.