Figured this would be an interesting topic of discussion, because I love insects, but
hate them inside my living space. Spiders I'll generally try to capture and release outside, but if they're super small and by the window, I'll leave them be, just like a fly.
However, there are two insects I've encountered since I moved into this apartment a couple years ago (ground level, 2 floors, only one neighbor, hooray). Cockroaches and house centipedes. Haven't seen a roach in well over a year, thankfully, but I kill them mercilessly on the spot. Zero tolerance for roaches in the home, no question about it. House centipedes, while beneficial and not dangerous to humans, are
terrifying and move way too quickly. They look either like prehistoric monsters shrunk to miniature sizes, or very small Pokemon. Spiders? Flies? Generally okay, but if you're anything else, you played yourself. I came in the front door the other day, turned on the light, and a big ol' house centipede scurried out from the front closet and stopped right in front of me. Had a staring contest for a minute, then... buh-bye! GTFO.
Do you kill 'em 'cause the missus/hubby is too afraid? Do you let 'em out? Do you collect their corpses (that's so metal)? Who is your friend and who gets the shoe? Also, ants. Ants get killed every time.