Part of my point is that you don't feel over-engineering nearly as much. If it is under-engineered, it probably doesn't work, and at least has a list of pain po

Part of my point is that you don't feel over-engineering nearly as much. If it is under-engineered, it probably doesn't work, and at least has a list of pain points that are fairly obvious. Over-engineered components will work (sometimes flawlessly), so you don't realize you've spent too much time and money on something until long after you built it.