Blacklisting Northwest Airlines

I had the dubious pleasure to fly with Northwest to Seattle last week and for me, Northwest is now finally blacklisted. Not only do they still fly hopelessly outdated DC-10s (I am not qualified to make a judgement about the airframe, but I am qualified to make a judgement about the cabin), but I also really have a problem with the cabin crew attitude. There's nothing wrong with the cabin crew's average age being well above 50, but I do have a problem with them acting as if they're looking after a kindergarten. Point in case: "Madam, can I have a 7up please?" Answer: "Son, the galley is up there in front and you may want to stretch your legs anyways".