Same Story But Different Memory.

What would life be like without memories. I always remember going to see by Uncle a the hospice as he was dying of a brain tumour. I talked to him about dying and he said he had great memories and that is what made it bearable. Everyone's memories are totally different and do you notice that when talking to a friend or family member that we remember totally different things.  I will often talk to my sisters and they will be yaccking about different things and I will not remember them, but yet when I mention something the same thing happens.  I wonder why everyone remembers something different?