ORIGINAL: Greybriar
What good does it do to back up Steam games if Steam is still required to run them and/or Steam no longer exists or is purchased by a company that changes the terms of use?
Sorry, but I've seen too many PC game companies disappear and all support for their games disappear with them.
That can be said about any publisher/developer. Whether they sall via download or CD/DVD.
What about games made for DOS, or win95, or win98,....the good majority of them will not work on modern OS's. So your point about maybe someday not being able to play a game you bought on steam, well that applies to EVERY game, downloaded or bought in a store.