I moved in (and quickly out of) a place infested with critters I had never even heard of (wtf is a carpet beetle). The day I moved in, there was a house centipede and a sizeable spider in the bathub, fighting to the death. I didn't know which side to take so I left them alone. I came back later to find them both ostensibly dead and not moving. I came back even later to find the centipede gone but the spider still dead. I felt like David Attenborough. I still think about those lil gladiators sometimes

Every centipede you see equals ~700 dead spiders that aren't living in your house laying eggs and biting you. You'd have WAY more spiders without them