If you open every single sealed retro game out there, you are destroying rare relics and artifacts. In 100 years all you will see is crappy pos cartridges. They won't be anything special at all.
You do realize that nearly all games
will have died the bit-rot death - compact disc
or rom. It'll happen inside a sealed box just as much as a loose cart or disc. So what does it matter in 100 years???
This is why
emulation is important; it preserves this art form and a piece of culture. In the grand scheme of things, given that functionality is
waayy more important than the physical display of the item, sealed copies contribute to nothing. The most important thing is the experience of playing the game, and that's what emulation strives to accomplish, even when people think an emulator is 100% - emulation authors are still striving for that last 1 to 2% accuracy. Clearly you haven't thought this through. Game experience > than a sealed game.
The only reason
you put so much importance on a sealed game,
vs an opened game, is because of how
important it makes
you feel. Nothing more, nothing less.