In reply to Blue Straggler:
> What satisfaction would that bring you?
It gives me more of a feeling of replying to a real person. I suppose it changes over time. A persons postings build a picture of their online personality eventually and that gives me something to relate to. A mugshot isn't strictly necessary, you don't have one (why not?) but through your posts and replies, and one time you kindly gave me info via PM, I see you as a person I can relate to in some way. You also have photos, a logbook etc.
When people post without any profile, especially on maybe controversial subjects, it makes me wary.