I've given some stuff away and made a few trades here and there when I had at least 2 of something, but I have 98% of all the stuff I've bought as well.I've pretty much kept all of my vaping gear too. I've donated some of it a few times but never got into selling anything. Even stuff I don't care for just gets put away. I haven't used the trading post here much but just bought a RTA on there.
I even saved all the boxes the stuff comes in. I don't know why but I still have bins of empty hardware boxes down in my basement.
I also have all my boxes and packaging. It shouldn't be surprising that people who keep their stuff also keep the packages. What I don't have is room for all this crap LOL!