For me personally it isn't about being sentimental at all. It's about original factory packaging. I don't store guns in the plastic cases but when I sell one I like to be able to have the original box. Like someone else said, it shows you cared about the piece.

I personally have no use for presentation boxes. I don't display my guns for anyone to see. If I have a close friend who I know appreciates guns I show that person. I have no desire for someone who visits my home to see a gun in a presentation box and then have that person blab to people I don't know about what they saw in my home. That's how stuff gets stolen.