You also are assuming everyone here is here to chat and otherwise interact. If I was here here purely to vote on polls, read stories and occasionally talk via Forum message to people, I can't see why I would have a filled out profile.
If you aren't here to speak to people, why give them a reason to. If I wasn't an admin here I would go with a blank profile as well.
Honestly when members have complained about blanks I find myself thinking "Are you just reviewing the member lists looking for people to pester? Good God, I would hate you too if you messaged me out of the blue doing that shit. "
Point is not everyone is here to be interreacted with. They will choose when they will do so. It is quite common for fetish boards since not everyone wants to discuss their fetish daily.