Boredom has been used as a technique, it is a device. In Zen, boredom is used as a device: you are bored to death, and you are not allowed to escape. You are not to go outside, you are not to entertain yourself, you are not to do, you are not to talk, you are not to read novels and detective stories. No thrill. No possibility to escape anywhere.
The leaf was darkish, and had prickles on it, But in another country, as he said, Bore a bright golden flow'r, but not in this soil; Unknown, and like esteem'd, and the dull swain Treads on it daily with his clouted shoon.
Of course boredom may lead you to anything. It is boredom sets one sticking golden pins into people, but all that would not matter. What is bad (this is my comment again) is that I dare say people will be thankful for the gold pins then.
It seems to me that all of the evil in life comes from idleness, boredom, and psychic emptiness, but all of that is inevitable when you become accustomed to living at others' expense.