Nostalgia

This post is not related to work, but I feel compelled to put it down anyway. I have been feeling very nostalgic lately, and I'm not sure why. I find myself longing for things from my past. I found ELO's "Don't Walk Away" on Spotify. That took me back to my high school days when "Xanadu" was in the movie theater I worked at. I would be sure to step into the auditorium every time that sequence was onscreen. I actually ordered the movie from Amazon, and I watched it this past weekend. More recently I've been listening to The Cars "Drive." That takes me back to my Navy days. That was a big hit and would play frequently in the bars we would go to. Periodically I'll dream that I'm back in the Navy, either on my old ship or a different one, but with my old crewmates. I find myself missing my high school friends, but when I reconnect with them I find we don't have much to talk about it, and very quickly the Inbox is no longer receiving messages, so I stopped trying. I bought a book where you fill in answers to questions about your childhood and schooling and experiences and such, and I've started filling that in so my son will know more about me when it's finished.

What I don't understand is why I'm feeling this way. I love my life, my family, my job. Why do I feel the need to call up these memories and feelings from so many years ago?