It's bloody quantifiable enough in my world....two kids, 19 and 20.
My son is the younger and living in his own apartment, full time job, credit card, vehicle loan, etc. Doesn't expect anyone to give him anything (except maybe a little "help" from dad once in a while that he doesn't ask for).
Ok, so your evidence is your own kids ? Okaaaaay.
It's really difficult to quantify such things, and keep in mind if you're on this board then the same things were said about your generation.