Methodological Narcissism:
"Fanatical adherance to a preferred method at the expense of substance; view that there is one and only one way of serving God doing research, that is, by employing the one, best method." (Hagan, F. E., 2010). Research Methods in Criminal Justice. 8th ed.
This reminded me of what a failure door to door preaching is, yet they keep on using this method. What a huge waste of time and effort, not to mention paper wasted in garbage cans.