I'm reluctantly accepting of DLC if it's just in the form of extra maps, skins, stuff like that. (I think it's a little cheap, but it helps them make money and most people who buy it don't seem to complain.)
What I'm not okay with is DLC that actually improves your performance against people who don't have it, e.g. stronger weapons and magic. That's just broken and I don't play games like that as a passive form of protest. (I'll continue to play Pokemon after the release of Bank, because you can build a perfectly good team in just X/Y, most friends would be glad to give you eggs of anything else you'd want, and Bank barely costs anything.)