When the girls were little, my wife would always insist that we bring them to the photographers in the mall for just about every occasion: Christmas, Easter, Arbor Day, etc. At the time I thought it was excessive. "Why do you need so many pictures? Why can't we just remember these moments." Well, now that my eldest daughter is 18 I am so thankful for my wife's instinct... because there's a whole bunch of stuff I wouldn't remember without these visual triggers.
But in addition to remembering loved ones, I like the idea of remembering places. Especially places we used to call home.