No I don’t think anyone should have Life Tenure it gives them too much power and power can be very dangerous. Everyone should know that if they don’t do their job appropriately or if they let their personal preference or bias get in the way of the laws and rules governing their job obligations then they can lose their job. Everyone needs to work under the cloud of being dispensable so they are always on their toes and are less vulnerable to corruption and ego. If the President can be impeached and a King can be dethroned there is no reason that a judge should have life tenure.
So maybe the best thing should be a system of review and reappointment.