[katzenversteher]

I while ago (around 2010) I worked at Océ Technologies R&D and at least to me the machines while incredibly complex where quite easy to operate and maintain. In fact every developer was allowed to print their private stuff (non commercial) on the machines under development. I believe this really helped because we basically had to become operators and maintainers and got a feel of their roles. If you print something for yourself, family or friends you also take a better look at the output or sometimes have a very specific use case in mind.