Nope. Legal grey areas (and straight up piracy in many cases) aside, emulators are essential for archivists. No console (or legacy PC build) will be around forever, and there will always be games that don't see ports. Not because of tech, either.
Also, if there's even the slightest difference in versions of a game, it should be archived as well. Admittedly, I'm a bit crazy about preservation, but yeah.