Originally Posted by roteague
For myself it's a matter of learning what works and what doesn't - exposure and DOF. When I sit down and examine my photos I want/need to know exactly what I did so that I can assess what I need to do different - the exposure is probably more important than anything else for me as I can usually clearly recall everything else when looking at the photo.
Perhaps when I'm more experienced and more confident I'll no longer feel a need to record the exposure. I know a lot of pros that say it's pointless, but will recommend it for someone starting out.