My stance on this:
If not having the DLC does not in anyway hinder your game experience, who cares? I thought Deadspace 3 is easily the worst of the 3 games, but the DLC had nothing to do with it. Think of it as all of the extra feature on a car, no one is forcing you to buy them. DLC exist for people who must have certain things in games and are happy to pay for it, if you're not one of those people then just don't pay anything.
The only time this really bother me is with a system like Diablo 3. It was very obvious that the game is made with the Auction House as the main feature and many of the design choices reflect this. It was at the point where Blizzard release a patch to nerf the drop rate, because people were not already spending enough time farming for loot.