It’s really not that weird, people collect action figures, beanie babies, comics, skate boards, Star Wars memorabilia, records, historical items, etc. Collecting video games because you like the industry isn’t weird at all.
I Think it's more that I originally bought these with intention to play because they were cheap and still can't get over the shock that because of my horrible backlogging habits they're now worth hundreds. Like Xenosaga episode III sealed has now become a justification of me of the benefits of never playing your games. Also how the is Pokemon Black 2 and White 2 worth so damn much and why do I have a copy of each??