I don't mind spider's when they're not on me. I won't go out of my way to kill them or even kill them if they're wandering through. When they're on me or something I'm holding I go into survivalist mode and it's either the spider or me.
I have to agree about roaches. They're the only thing worse than bees and spiders in my books. I don't think we've got flying roaches up here, and I don't want to know if we do because I'd give up trail riding is I had to deal with spiders and roaches.
Show me a horseman who hasn't fallen and I'll show you a man who has never truly ridden.