They do. It might not be direct or even obvious, but when you make a tool that a person relies on, people a harmed when it fails (or perhaps even works). Our death tolls might be small, but it is naive to believe that any product does not have a price in blood. It is our responsibility to understand it, and to make sure the benefit is worth it.

To waste someone's time is to deprive them of a little bit of life.

Only if they're not enjoying it.

I'm well aware of Therac, though Boeing was my representative example. Thus why I said most.