This was very touching. To most people, it's probably just cute, but just like you, I felt envy and some kind of nostalgia, even though it's something I could never live. I didn't really cry, but I'm feeling like doing so. But even with this strange sadness, I feel happy, somewhat. Like when I see an a cute, happy family on the TV and feel happy imagining myself in it, but also sad and envious.
I'm all mixed up, but thanks for sharing this. It was beautiful.