The link you posted doesn't seem to work.
[How very convenient that the cutoff of adulthood is your own age]
I chose the number 25 because it is usually a few years after most people have graduated college and have entered the work force. The number 25 is used in many places as a "special" age. Insurance companies, rental car companies, hotel bookings, etc...
[you're going to insult vast numbers of functional adults, at least insult yourself in the process. Silly child.]
I don't know about your peers, but from my graduating class of ~1000, I would guess there were less than 100 who were completely independent by 23.
[First of all, you are in fact wrong. The majority of young adults do in fact live independently.]
I'll do some research on that.
