My "never again" story was around a decade ago. Thoughtworks had me interview with roughly a dozen people over half a dozen or more interviews, lasting ~20 hours (if you include the proctored Wunderlic test they administered to me on premises). At the end of that lengthy process, they said they would have loved to bring me on but "didn't have any open positions that fit my set of skills". You know, that set of skills I listed next to my work experience on my 2-page resume.

I no longer submit applications to any job until I've spoken to someone who works there to ask hard questions of them before I interview. I also no longer consider any job that lacks clear articulation of the platonic ideal of a candidate.