Too fast for good drama. Another approach would be to start by banning anyone born in 2000 or after, and then remove a year from that cut line, every year. This

Too fast for good drama. Another approach would be to start by banning anyone born in 2000 or after, and then remove a year from that cut line, every year. This way if you are an old addict you have more time to prepare, and every one has a clear deadline coming their way. By 2030 nobody under the age of 40 is allowed. By 2040 nobody under 60, by 2050 nobody under 80.