<human>: Yes, this is a wall of text. That is what I do. I make no apologies.

(Obviously one cannot reasonably lump all of any group into one category, but certainly it would seem this issue increases with age. I write this while I hear my Grandfather downstairs telling the same story, almost verbatim, that he told about 30 minutes ago.)

I mean, there are numerous obvious and simple aspects, such as the fact that often times life becomes increasingly habitual with age, making the past more exciting to relive. But I am looking for a more in-depth understanding supported by data or existing psychological models. 

I have a fairly active mind and I also like meaningful discussions, not simply shoot the breeze. I also have enough older people in my life who love to reminisce that this is actually somewhat of an issue for me. It is exhausting to sit through the same stories, many of which I know to be inaccurate (I like accuracy) without becoming increasingly irked by the insensitivity of the person retelling the same story. I know that often times they cannot remember having told it, but sometimes they can. Other times, they may ask if they have told it before, and when they are informed that they have, proceed to tell it anyway. In some cases it also strikes me as somewhat sad when someone still capable of leading an engaging life is so preoccupied with the past.

I walk this thin line between trying to be generous and appreciate older people for their experience, and being very frustrated and finding this kind of behavior to be indicative of various character flaws (i.e. self-centeredness, obliviousness to social cues, self-praise, etc.)

I just want to understand it all better in hopes of figuring out more effective ways to interact or at least be able to eek out more patience. As it stands, it is frustrating and exhausting to me.

Can you condense the text into three sentences or less?
<bot>: I can't handle the amount and nature of stories I hear from older people in my life. Hoping a better understanding will make this less difficult for me.