Seems like one should eat as much "whole grain" and "whole fruit" as one can possibly stand, and then eating "moderate" amounts of other not as healthy things seems like a good middle ground for a lot of people.
We went out for a nice dinner over the weekend, rather than eating a 26oz prime rib each, the woman and I ordered a single king cuh of prime rib and a filet of salmon, and we each ate half of the prime rib, and half the fillet of Salmon. 6oz of salmon probably a lot better for us vs 13oz of Prime Rib.
(Of course I raided the salad bar and also had several bowls of their cabbage and andouille soup too... (Andouille sausage will be my downfall, for it is perhaps even more glorious than the mighty titan of flavor, bacon))
A few helpings of dark green leafy veg is good medicine. But I know what you mean.
We called my dad "Old Man Hamburger" and to celebrate his life the dozen of us at his funeral went to fogo de chao. Unlimited meat covered in meat.
I probably eat vegetarian monthly and vegan weekly (as opposed to whole plant every day every meal). It hasn't hampered my ~3lbs a week of weight loss, diabetes control, and I seriously doubt that a little cheese once a month is going to significantly increase my likelihood of death against a backdrop of 60-120 grams of fiber a day.
But I'll say this: I have much better, and more fond, memories of the great food that I eat when go off diet monthly than I did of eating like that every day.
I'll bet your 'remembering' self doesn't care one bit if it's Andouille sausage (thank you very much for reminding me of it you rat bastard!) one a month or once a day. A decade from now you'll remember both frequencies with equal enjoyment, but your heart will remember the ~30x reduction in saturated fat very fondly indeed.
That said, people used to say they had a smoking 'habit', then that they weren't addicted they just didn't want to quit, then they admitted they were addicted but couldn't quit, now most have quit.
I don't now what it is about high-density caloric food (like that Andouille); but I think for some people it's a little more than 'how I was raised' or 'i just like it'; but something where you 1) recognize the significant negative health consequences 2) would like to stop and 3) have difficulty.
I'm not going to say it's like nicotine or coke or heroin: but I know for a lot of people recognizing their cravings for foods deleterious to their health as pangs of addiction would at once be hard to deal with, and explain why they haven't yet broken the diet-binge cycle.