Actually, there's a lot of science behind the "tasteless flavorless processed garbage" at fast food places. It's designed to hit the reward centers for fat, salt, and sugar which in the really old days were in short supply for humanity and thus we evolved to crave that shit like a drug. It hits something really primal, which is why people can be so easily trained to suck that shit down.
I mean, I
love natural food, vegetables, fruit, lean meat, nuts, beans, seeds... all that really healthy stuff. And I
still enjoy the occasional fast-food grease-and-salt meal.
What makes that stuff bad isn't so much what's in it, but how frequently it's consumed. As a once in awhile "feast" it's perfectly OK. As a daily diet not so much.
However, I don't see where an arcology would
inherently live on processed and flavored sludge. It was mentioned in the OP they have vertical gardens as well as dirt farming outside the city proper. There is probably a lot of utilization of "pink sludge", sausage-type foods and utilization of less aesthetically pleasing parts of food items for low-cost protein, fiber, and vitamins processed into "cereal" or "food bars" or "sandwich slices" or whatever, but actual vegetables, fruit, beans, and so forth should be readily available to all but the most destitute. Animal flesh would probably be a bit of luxury, but that's not necessarily a bad thing, either. Certainly
large animal protein would be a luxury, but eggs, chickens, rabbit, fish (as part of aquaponics), guinea pig, and other small food animals could be surprisingly common. Given the space estimates, people growing a couple plants (presumably via hydroponics although dirt growing wouldn't be impossible) in their living spaces wouldn't be unheard of, either.
Although I'd prefer the Shire, I think I could be content in the arcology as well - over my lifetime I've lived in a variety of places and have been pretty much equally happy regardless of location as long as certain other conditions were met. I'd like about 180 square meters (2,000 square feet) of space for my living/project/garden space, especially if I'm working from home/telecommuting although clearly I have no problems sharing that with a spouse. (Well, no more problems than any other marriage
) I think some kick-ass soundproofing and capacity for privacy/solitude would also be a must.