One of the reasons is that people in the software field (and in a few others as well) have this urge to look for 'challenging' work, i.e. things that they haven

One of the reasons is that people in the software field (and in a few others as well) have this urge to look for 'challenging' work, i.e. things that they haven't done a million times before to the point where they've become boring. Which is also why you see a lot of s/w engineers working on untested (anything that can't achieve a year of up-time) clever designs/implementations. Its exciting to be clever, but its boring to be conservative with your design to achieve high reliability.