Ages ago, before the advent of the stone age, people used their own hands to break fruits and nuts. Sure it hurt them; but they had no option. Some genius then came up with the idea of using stones instead. Everyone around must have opposed him, claiming that he is inviting dependence on those stones. But over time, everyone came to accept the benefits and started using stones. What they essentially did was to offload a painful task to an external tool, called the stone. Since then people have come up with various ways of offloading their tasks to external tools. This has been the driving factor behind most inventions - from stones to computers and mobiles.
We began with physical tasks. Until a century ago, we had reached a point of time where almost all physical tasks could be performed by external machines. Though we had machines to take care of most physical actions, we had to help these machines with the decision of what needs to be done. We were burdened with the job of deciding which action is appropriate for now, and then getting the machine to do it. That is when mankind moved into the world of computing and later into Artificial Intelligence - to externalize the intellectual load. To help us with the task of taking routine decisions.