Botters are not annoying. I remember a bot (probably) using for farming mudosa. I was always fighting this lvl50 dende and he was not moving i was just hitting him and we where bot farming...lucky.
Botters can be abused by players. I remember back when the teleport botters were still around I would find one during the DB hunt and steal his DB mobs. Made hunting too easy, that is until the bot checker does it's job and the botter gets force logged out.
Just because botters can be useful from time to time doesn't mean they're not annoying.