I voted dead against, and the reason why is because these forums are available for browsing to the public AND also spidered/archived various bots (Googling for "Drake airsoft" goes straight to my ASC profile on the first hit.) I have an uncommon last name, and I do have potential/clients looking up my name for work, etc., and this is not something I suddenly want to have to explain to a client (and potentially something that could cost me work).
And FF brought up a valid point, too.
Plus there's nothing stopping someone from registering with a fake name, and then posting something stupid. It's not the age-verified people making the stupid posts.
Plus wouldn't be legalities about that for the under 18 people?