But why? If we’re serious about extending lifespans the average age of parents should be going up. People should be using their younger years to establish themselves in society and build a sustainable lifestyle. By the time you are 40, the costs and demands of a small child should be effortless, easily solved with the riches you’ve accumulated. By the time you hit 60s, your child is graduating college and getting on with life. If you’re lucky maybe you live to 90 and even see them reach well into middle age. This doesn’t sound like a bad timeline.