There are many levels of automation. Some forms of automation require your active input. This is especially true of habit type automations.

A practical reason for fully automating is that it will continue whether you can perform tasks.

Several reasons can justify full automation. First, I will define what full automation means.

To fully automate means that an entire task or process occurs without your effort or input. There are, in fact, different types of full automation, each with its benefits and dependencies. But the main thing they have in common is they are not dependent on you.

Back to the advantages, one as I write this is that I woke up pretty ill today. I'm not capable of performing my usual tasks. Ideally, the tasks I need and want to get done today would be best handled if they were automatically performed.

It doesn't have to be just myself, but if something else is incapacitated, such as your computer not working or losing power, it is best handled if a task is not relying on those. More sophisticated automation would also respond to specific circumstances and switches dependencies as needed. This ties into the idea of backup systems.

It's not about things going wrong, though. A considerable benefit of full automation is that it doesn't take your time and energy. So that frees you up for anything else. It also adds scalability potential and efficiencies, which mean doing things that are impossible to do by yourself.

Full automation should be an end goal of any system design.