I never had any real interest in it, I'm not a fan of online games in general (mind you, there are exceptions to that rule, TF2 is the obvious one) and the whole thing just didn't look like it was for me.
However the DLC business is absolute anti-consumer bullshit, if I were thinking about getting it then I wouldn't be now.
I have never purchased piecemeal DLC for any game in my entire life, and I plan to keep it that way. Game of the Year Editions generally make the whole DLC thing irrelevant anyway, as I almost never buy games at launch unless they're something I really, really need (the last game I bought day one was Portal 2 back in 2011, although Bloodborne may dethrone it in a couple months), and I'd like to get my games y'know... finished.
That's the biggest problem I have with DLC as a concept, it incentivises developers to hold back on some of their better ideas for DLC packs down the line, instead of just adding them to the original game, and as a result we get games that are, for all intents and purposes, incomplete.
It's the kind of thing that you just wouldn't see in any other form of art, would you expect to buy "bonus DLC chapters" for a book? Would you expect to watch a movie, only to have a part of the story cut out until you bought some "DLC scenes?"
Games shouldn't be made as "service platforms" they should be made as cohesive artistic wholes, and the fact that they're not anymore really worries the hell out of me in regards to the medium's future.