Oldest person you know?

The oldest person I ever knew personally was my Grandmother (on my Mother's side.) Grandma lived to be 103 years of age, but the last two years of her life she was very confused. I don't know if I would want to live to that age if I was not mentally enjoying it and had no recollection of who people are who are related to you. I often think about all of the historical changes she saw throughout her lifetime. I'm sure cars were a miracle after only having horse-drawn carriages for transportation, as was most of the technology that we take for granted today.