I think there's more to it now: it's to deconstruct the adult in the JW. Everyone has to be the same, down to the same type of suit, skirt (check that length, sisters!), type of job (education limits help create this) and basically any other individualization.
Now that I am forced to attend on occasion, I just see a lot of robots in sad clothing, with the same types of jobs and circumstances, depressed outlooks, basically "file folder tan" type of people.
Perhaps with the space of not attending for a decade this has become obvious, but I really think the "org" is making a real effort to keep everyone in line, in a very narrow space of being.
Mr. Spiral looks great in a beard, BTW. Haha.