If what you're only ever doing is lifting boxes and other large objects by pressing hard against two sides, then maybe so. But I think human hands have a lot m

If what you're only ever doing is lifting boxes and other large objects by pressing hard against two sides, then maybe so. But I think human hands have a lot more degrees of freedom here, and the moving boxes from point A to point B problems are better and more easily solved in other ways. No climbing up ladders, using your fingers to pick up small objects, or any of the other more complex tasks humans can do. And moving a hospital bed around requires a surprising amount of forethought and mental agility -- that thing can easily injure someone if you hit them with it, and you could cause a lot of damage to walls or other objects if you hit them. And then there's the poor terrified patient being pushed along at 30kph towards a very unknown fate.