There is so much I wish I'd asked my mother throughout the years. My dad's mother was divorced and had 2 daughters. She married my grandfather in 1915. I'd love to know about the divorce; it just wasn't done back then!
I contacted my aunt and several cousins asking info on their families (they were all in my life when I was a child). All were so supportive and gave me so much info for the geneology book I put together for Mom for Christmas that year. I just wish I had asked about family stories they had.
My 17 yo grandson is thinking about an engineering major in college. That brought to mind that both my father and grandfather were engineers. My grandfather was a civilian employee of the Army in the Phillipines before WW II. He was captured and died in a POW camp there. I told my GS about that and also that I've decided to tell him and his sister family facts and stories when I think of them. Both GKs listen respectully when I talk; whether or not they'll remember in a few years is a different story. LOL But how I wish I'd ask Mom more.