It happens sometimes. I have a NIB game sitting in storage that I bought with the intention to open it up and play it, but didn't have the space. I am finally about to move into a new house, and when I do I intend to bring it over at some point, open it up and set it up.

Having said that, my game has also gone up in value, and I sometimes think about instead selling it and using that money to buy the exact same game, just not a NIB version of it. Just never see them come up for sale it seems, so I'm guessing the NIB will be mine