Yes Pilot DAR, but it is a mindset. The building mentality. If you learn from memory, great. But it is about all aspects of airmanship. A lot goes on pre flight. Not all can be done by sole ref to memory.
On longer navigation trips it becomes, I think, more important. The checklist, is part of that flight. If you think about all you complete. I am not talking here about jumping into the Cub, from the grass strip, to go for a 30 minute flight.
The thread moved to training and checklists and operations, then to the old debate about should you, shoud'nt you. It is all very well for experienced, multi houred pilots, to pour slight scorn on the use of a checklist, but that is the point that some of us are trying to state, is not that helpful.