An old saying used to be "Life begins at 40" but now since the new 40 is 30 it's hard to determine. I think that saying came about because people had children when they were younger & the kids were usually moved out of the house by then! I'm 56, liking it & loving it. My mother will be 80 next year & says "You're only as old as you feel". She has a very social life which adds to longevity of life. It's all in your perspective.