Missing something, not someone?

I often find my mind wandering through all the my memories and sometimes it can surprise me. What do I mean with the previous statement? Very simple, I always go to places and actions in my past when I was happy, and what is really fascinating it is that I find joy in what I was doing at the time and not who I was doing it with.For example you miss the long walks at night, the cuddling, the kisses, but not necessarily the person you did them with. I find it strange but  in truth is it all that strange? An idea that keeps getting my attention that most of us don't regret the people we were with but the moments we shared together.I remember many things I've done with someone but in fact I do not regret the person..but the things we did, the romantic surprises ,the sacrifices and the most important of all the little things, the details. Yes, the person who was there matters but in the end the thing we cherish the most are feelings and I am not talking about love, I am talking about happiness, and yes for some love is the most important feeling in the world, but happiness should be if not equal right under it.The point I am trying to make in the end is that yes we miss the person we loved, but we also miss all the other little things which also meant a lot.