Nostalgia is definitely an "it" thing these days. For better or worst most of us hold certain things from our past in a kind of religious regard, elevating even old toys to huge significance in our minds. Sometimes it leeks out when we least expect it, "They can't remake The Karate Kid! That movie is art for cristsake!". I'm definitely guilty of this, I've saved all my old toys from when I was a kid and now they are being played with by my kids. I have to say it does feel like a little piece of me dies every time one of my children pops the head off an old Star Wars guy.
There is a second layer of reverential nostalgia at play for many of us and certainly with me. The place I grew up, the neighborhood I spent my entire childhood and all the explorations, mock-battles, forts, races and treasures that were a part of that place. For me, my siblings and the other kids in the neighborhood (that I'm still in contact with), I've made a map of all our childhood haunts (though not our teen haunts). I've tried to include all the geographical names I could remember as well as any points of interest that I could recall.
Obviously I'm doubling-down on that whole reverential nostalgia thing here.