What this shows me is that all human beings are capable of making incredibly foolish and extremely dangerous mistakes, even though they may be very talented individuals. You will find that many of the people who made these errors have been subject to rigorous selection processes, intense and high quality training and had many years of incident-free flying. They had no desire other than to the best they could be that day and certainly would have been mortified if they knew what they were about to do. It would probably also be true to say that they would have been joining the mockers on here berating the idiots who had done such a stupid thing had it happened to someone else.
What this tells me is that we can all do it. Therefore, we have to build-in anti-error strategies into our flying. The first one seems to me an inclusion of a threat-error management section in our briefs. That means we identify nearby airfields that could cause us to mis-identify our true destination. Also, the use of navaids for visual approaches in a commercial airliner just seems total common sense - yet another protection in place to save us from ourselves! I am more than happy to concede that, given the right combination of circumstances, I could do this - my only question is how best to minimise the likelihood of it happening. I would suggest that humility may be the best approach to this - there but for the grace of God go I.