If there is substantial DLC(or patches) planned for a single player game I just wait for them all to release before I start the game(like Witcher 3, FFXV later on, and hopefully ME:A). I only get DLC that adds a decent amount of content or if it is short and cheap. I'll go back to a single player game if it is more than just an hour long side quest that doesn't really do anything to the story and characters. Multiplayer DLC, at least the DLC I care about like map packs, isn't really a thing anymore(looking at Halo, Gears, Rainbow, Overwatch).