That fucker on the right is called a "house centipede" and they take years to get to that pictured size. It's a really terrible experience to be using the bathroom and glancing over at the wall and seeing a 2-3" centipede skittering around. They're not very fast, so they're easy enough to kill, but ugh.
House centipedes are little assholes though, they'll crawl up to you while you're sleeping and bite you a bunch to see if anything happens, then wander off, leaving a string of painful itchy welts.
That's obviously not as dangerous as the average Australian spider, but I have to assume none of those spiders are quite so eager, because otherwise the island would be uninhabitable.
Bad news: spiders and centipedes that live in your house are the latest of generations that have only ever lived in your house. Putting them outside is basically killing them