My point was simply that your point about owning a physical disc until the day you die is not the same thing as still owning a functioning copy of the game. All physical media, at least of the consumer variety that most of us own, will eventually decay and become non-functional. You also don't know what the availability of physical copies of older games will be in 30-50 years. It's quite possible with some low print run titles that a physical copy of a game cannot be easily replaced. Indeed, even if the media still works, finding something to play it on could be a challenge. As such, I believe digital media (DRM free being critical as others have pointed out) is the superior means of assuring that those games are still around decades and centuries into the future.