You buy a game not just to play it but also to support developers. If you don't give a shit about this part you can always pirate it. By telling the company you

You buy a game not just to play it but also to support developers. If you don't give a shit about this part you can always pirate it. By telling the company you will no longer use their product you are sending a clear cut message about that you a paying customer will no longer use their product.