Aging lies at the intersection of genetics and environment, which implies that 1) not everyone ages at the same rate, and 2) by optimizing the environment your body operates in (e.g., optimizing sleep, exercise, nutrition, supplements, and drugs ), you can optimize regeneration/repair and effectively slow the rate of aging. I'm lucky enough to have really good genetics for aging and I take exceptional care of myself, optimizing the above parameters, including the use of rapamycin. I have a long line of ancestors that have lived well into their 90s, even back in the 1700s, so I think there is a good chance my corpse will hold out long enough to see my offspring into adulthood.