As someone who won't capitulate on this issue, because the vast majority of DLC is a blatant ripoff, I hate this "feature" with a passion - especially when they're clearly holding back content from the original releases. I fear it's only going to get worse.
Edit: sidebar: when someone says that DLC is becoming less and less optional, and someone else storms in to say "YOU ALWAYS HAVE A CHOICE DERRR!" - yeah, that second guy is a fucking idiot. We're all well aware that no one has a gun to anyone's head forcing him or her to buy pathetic DLC for outrageous sums of money. Take the comment within the context of the conversation, for fuck's sake. If, at some point, games become so reliant on DLC that players feel compelled to purchase the stuff for fear of completely missing out on the intended experience, that DLC is no longer a "choice" with respect to that game. The game itself becomes the choice, and at that point you're talking about the possible cancellation of the hobby as a whole for individuals who cannot stomach the cost.
/rant off