I have no issues with DLC and never really have sans a few cases. The instances that really irritate me is when content is released as DLC that is a) Canon that is essential to the story (a-la ME2 - Arrival) or b) day 1 DLC that should have been included with the game but taken out to make more initial sales. Myself personally, the only DLC that I have ever bought was the ME2 DLC because I was heavily invested in the series and I got a xbox live points card for me birthday. Other then that I have never purchases (and probably never will) DLC. Considering 90% of it is "HERE'S A DIFFERENT SHINY WEAPON" or multiplayer map packs.
Something has always urcked me about paying full price for a game and afterwards spending $10-15 on a extra mission that is normally only 1-1.5 hours long. Maybe it is because I am old enough to remember when DLC was called an expansion pack and was basically a full game.