I understand. I'm a collector though. I don't trade anything in at all. If I don't use it I put it back in the original box and put it in the closet or the attic.
I also trade nothing, I still got my OG NES and SNES with all the games with it. I'm definitely a collector, all my old stuff in my parents basement collecting dust but at least I still got it. Maybe one day I'll display it all