58 years would be the full-life.
Evidence A: We got a car to replace the truck this past week. It has 4 seats for hauling kids, and also has 290HP and a 6 speed transmissions for hauling me.
Evidence B: I haven't shaved since Thanksgiving. Most of the reason is because Lettie doesn't have a beard of her own and she wants to experiment with mine. I don't miss shaving each morning before work and that's a 2 minute time saver. I might never shave again...unless I develop some creepy looking mustache region.
Evidence C: I've started working on my pilot license. I have 7 hours of flight time in a Cessna 152. I haven't flown anywhere except to the North East Practice Area and back to the airfield, but I'm getting better. One day the rudder will do what it's supposed to do and I'll be able to talk on the radio without repeating myself 3 times until I get it right.