[The above does not necessarily apply in highly regulated industries or where lives are on the line]
I can think of far better ways to spend infinite time.
We aren't taught how to write reliable software because very few people know how to write reliable software. It doesn't help that academia has a hard crush on OOP, which is a bag of accidental complexity - and complexity is a breeding ground for unreliability.
On those you're of course expected to do safety and testing up to the limit of the "value of a statistical life"s within the expected project impacts, but it still has time and budget limits.
Most software engineering is about making sure the happy path works well. When lives are on the line, you need to also plan to minimize the possible damage that can happen when things go wrong.