31 here, and going to be clocking up another bit of mileage on the clock very soon on the 28th.
Probably the young ones won't know this , but there was a film called Logans Run, where everyone in the city have life crystals on the palm of their left hand, which changed colour according to your age.
Also, they had a mandatory proceedure called carousel, where anyone over 30 would be 'renewed'. Those who chose to dodge their premature end, would become outlaws, known as 'runners', and a special type of police called Sandmen would track them down and kill them.
< sounds of door being smash down> "Hey runner, give yourself up !"
Oops, got to go...