I think after 80 years or so of living, most people would have learned a thing or two about life in general. While there certainly are old people who are bat shit crazy and can't drive any better than a lizard, I'm talking about the healthy old people. Everyone makes mistakes in their life, and from these mistakes, we learn what not to do next time in a similar situation, and 80 years is a long time to make mistakes.

After existing for only 1/4 of the time as an 80 year old, I have already acquired helpful knowledge about life that definitely would've helped me had I known it sooner. And I continue to benefit from what I have learned. Give me another 60 years, and I think I'll only know more.