Last night I had a dream that my grandma and I went back to a past world where my dad and my uncle were still kids. At the end we had to go back to our own time, and as my dad was saying goodbye to my grandma he said to her "It's funny, you came here to see what you once had, but you're forgetting what you have now" while looking at me, and when he said goodbye to me, we were both crying, and as he hugged me he said "I can't wait until I can hold you in my arms for the first time all over again" and I woke up crying. My dad and grandmother are both alive and I'm on good terms with both of them. What could it mean and what could have caused it?
I'm definitely no dream expert, so this is just an unprofessional opinion. With what your dad said to your grandma, maybe as a mom she made some kind of mistake or did something stupid while raising your dad and uncle, and he was reminding her if it. With what your dad said to you, maybe he was just letting you know how much he loves you, and how much you mean to him. I wouldn't think too much into the dream, as it could actually have no deep meaning.