Realistically this unlikely to be a problem in this century, however you are raising some valid points nonetheless. A lot of,if not most,capabilities animals, including humans, have are related to one thing: survival. Ability to move rocks, climb trees,or build sophisticated structures boils down to body's need to get food and preserve itself from destruction. These aspects are often overlooked when modelling AI and the whole focus is on pure logic. I sometimes think that one day we'll end up with universal AI and the first thing it will ask will be sometime like: "why should I do it?".