All adults are guilty of this
Lets talk about the reason I own 17 CDs and not all of them are great. As a barely there adult I'm currently making the choice of what I'm keeping and what I'm getting rid of as I move out. So I sold CDs I once bought for a lot more money than they are worth now. They probably meant a lot more to me then than now too. Regardless of their monetary or emotional value I still have them.
If we were to make an educated guess, I think we'd come to the conclusion that we keep mementos like these hoping that sometime in the future we'll be able to indulge in nostalgia (ultra, Frank Ocean, 2011). I'm gonna ignore all ideas of self-fulfilling prophecies, and the human condition of just always seeking that feel good feeling. Lets talk attachment objects.
Attachment objects sounds too scientific to describe the things we used to cling on to as children, but I think its interesting when you consider the fact that we just put one aside in favour of another. I put my blanket in a cupboard at my nan's house when I was 6 and I haven't seen it since. I haven't sucked my thumb since then either. But I still see my childhood friends, and we talk about our favourite memories. My favourite way of indulging in nostalgia is looking at all the songs, bands, and albums I used to love and I keep them with me too. So that's why I'm keeping those albums. Its a physical reminder that things have changed but these moments still happened.
To end my sappy introduction, I like music. I also like Psychology. I try to like photography too. So I'll be here trying to give my take on these. I'd love to hear your guys' opinions on why we keep things.