David, David, David.
I am 63. I still remember my youth. Did we get alcohol? Yes. Was there age verification to buy alcohol? Also yes.
Did we "phreak" free long distance and local telephone calls in the era of phone booths? Yes once again.
It is an incurable optimism to believe that somehow, although our generation read Playboy and Penthouse, our children and grandchildren will be blocked from porn because hand-wavey promises about age verification.