They're really annoying to catch haha. I remember when I first played CF and I was running away from a Tarantula; not knowing that I could catch it and donate it. Or (better yet) sell it.
I've never thought that they were scary, but I do get a little adrenaline rush when I see one. My husband thinks it's hilarious. I've caught tons of them in CF, caught my first one in NL the other day and I've yet to catch one in WW.
I think I caught maaaayyybe four. Two scorpions, two tarantulas. I donated the first two of each, then kept the others in my house. They make great furniture, as long as they don't escape.