For me, it’s about understanding the value having it provides. It’s ok to have something for sentimental reasons, but it just having been present in your life doesn’t make it meaningful. If you keep a piece of clothing you can’t or won’t wear again, what does having it do? My dad passed and I kept one of his favorite flannel shirts because it evokes so many memories for me. But it’d have been silly for me to have kept all of his socks just because he wore them.