I used to tell my father the same thing, he had some great tales but I suspect an even greater number of untold ones - one day it was too late...
My own kids will be sick of hearing about my life to date
I find the blog format to be really easy to jot down brief snippets of stories, one, two hundred words at a time with no "story" structure and none of the hard thinking about where in the time-line everything should fit, you just spill the stories out as they come to you and if someone wants to put them all in chronological order at some later date then so be it - four years on I'm just starting to cut and paste some of them into one document, I've done four months so far from this year and its seventy pages long already - just another four years of the blog to go back through now