Why are there so many spiders, there's a bunch of other insect i can tolerate
Because spiders are cool. And I'm saying that as someone with arachnophobia. Trapdoor spiders (as seen here) are genuinely cool. They look creepy af but they are pretty cool imo. Spiders as a whole, good for hunting/trapping, fast, deadly/paralizing venom, large scale traps (webs) that don't affect them, exoskeleton (resilient), ability to scale any surface (barring unaturally smooth like wet kitchen tiles), and much more. How can a bug fly with the wind because of some string from their behind? Seems like fucking magic. I'd say there are no other animal groups that have things this cool.
Despite all this, I'll never think they look 'cute' or whatever. And I will get sacred when they pop up in my house. Non the less, when depitcted here in manga, I suprisingly don't mind that much.