The day is not far off when our entire genetic makeup and health history in tandem with our geneaology is implanted into our upper arm on a microdisc. The chip is updated constantly by signals sent by low frequency waves using GPS positioning. We are terminated when we are nearing "critical mode" or our societal profitability profile falls below mean the monthly acceptable standard. Straight out of THX 1138.
THX 1138 indeed. You will not see the ACLU fighting against it either... unless it's for criminals first.
Or just kill everyone at age 30 like in Logan's Run (tell them they will be "brought back in a new young body".
Or kill them and solve world hunger (like in "Make Room Make Room" aks "Soylant Green").