To most of us who actually post on the forum here this might seem like a strange thing to do, but this is a collecting site after all and the apex of 'collecting' anything is to build a collection of items which are in the best and most complete condition possible, for video games this is usually new and sealed.
With video games, a lot of us end up with a 'collection' because we want a library of games to dip into and actually play. That's very different than wanting to build and display a collection of, say, model cars, where the collecting and display is the ultimate aim, not to take them out of the box and push them around worksurfaces making brum brum noises. That's all new and sealed game collectors are doing - collecting in the real sense.
I don't like braggarts either, which is why I avoid talking games to most people apart from folk on this forum, with my nephew or with some of the owners of game stores I frequent.