"Initally, DLC was something you could buy to add a little extra to your game, It seems most people are accepting of this idea of DLC. If you don’t like, don’t buy it. You’ll still get the full experience of the game. What they take exception to is when they feel like bits of the game are deliberately “cut out”, so they can sold for extra as DLC, where as now it is becoming common to include it with the product, and have it unlocked for an extra fee, or in the recent case of Deus Ex, using DLC to “Complete the story”.
People feel that if you buy the disc, you should be able to access everything on it. Just like if you buy a car with air conditioning already installed, you should be able to use it without having to pay an extra fee to the manufacturer."