I was raised on Kraft Mac n Cheese, which is sad now that I've seen the world, but there are times when one still craves the old ways, even if they aren't the best ways.
Organic brand Annie's* makes a good microwaveable Mac n Cheese, which should tell you that though I've now "seen the world" of Mac and Cheese, it doesn't mean I ever have the time to make a homemade one.
*Mildly ironic because Kraft advertisements of the '80s used to feature a precocious girl named Annie who was campaigning to change the product name to Kraft Cheese and Macaroni ("Because it's the cheese that makes it taste so good!")