If you're afraid of this, you've missed the boat on why work exists. The reason we have work in society is because we have tasks that need to be completed or we will all die without it. If there is no work that needs to be done, it isn't a travesty but a success.
We wouldn't necessarily die (that depends on the task), but our living standards would go down and we wouldn't be able to produce all of the stuff that people want. Machines will never replace human labor because the list of human wants is essentially infinite. When one thing we want can be more or less fully produced by machines, we just "move down the list" and go on to the next things that still require human labor to produce.
