What makes you nostalgic?

Seeing schools in the morning when their fields are all frosted over. I remember running across those fields when I was a kid, because I loved the way the grass crunched under my feet

They say we all look at the past with rose-colored glasses, and I definitely know that's true, but I can't help but to feel nostalgic when I think back on the times as a kid when I was happy with my sisters and everything seemed right in the world. Of course, kids always see the world this way and rarely see what's behind the curtain, but ignorance can really be bliss sometimes.