Nice try, but it's you who likes to argue. My job is multifaceted as are most. I do some menial tasks, which I am happy to do. Most others require some skill but are still quite ordinary. All are necessary. An engineer once told me that his job had a lot a drudgery as well, mainly crunching numbers.
My company couldn't afford and wouldn't benefit from any kind of robot, the same for most businesses. Our business is maintenance, not production. Trying to shoehorn production technology into maintenance jobs won't fly.
It is clear that you have no idea what the maintenance field is. Everything wears out, falls apart, gets broken, or doesn't work in the first place. Task your robots with that.