Well some people see it as an investment. There are a ton of 90's games that would fetch a great price if they were NIB right now. Even marginal games from back then could be worth quite a bit to the right person.
Personally I think it is crazy. There are a couple of reasons to wait on opening a NIB pin. If the game is really cold from shipping during the winter, let it sit indoors for a couple of days to let the temperature equalize. If you are doing construction on your gameroom letting it sit while waiting for a spot is totally fine. Other than that, tear that bad boy open and start playing!