It's complicated. If I gave an obese person a bag of sugar or a kilo of lard she probably wouldn't enjoy these things. On the other hand some folk can eat luxury foods regularly without ill effect. It depends on personality and intent as much as upon specific foodstuffs and substances.

And are you sure about protein? Personally I experience a strong desire for meat if I haven't had any for a few days. The fulfillment of that desire creates a visceral pleasure. Furthermore I can't imagine giving up apparently innocuous items like tomatoes, either. For a few months perhaps but after a few years I'm sure I would pine at the memory of fresh juicy tomatoes.