My idea - When the food is nutritionally complete, and extremely bioavailable, providing everything you need, then you don't get bored with it. The brain doesn't force you to rotate it out in search of other nutrition.
I actually spent 2 years as a accidental vegan. I was only drinking the original Soylent meal replacement drinks. I was always hungry, Always craving. I drank so much I was bloated, yet still hungry.
The truth is I am never bored of food. It just seems food is much more like fuel, just another bodily function – take in as much fat and protein as you need, when you need it
It always tastes great. Of course it does, it's what we're built to eat, just better quality
Where I live the easiest meat to get is high country grass finished beef – some of the most environmentally friendly and healthy meat in the world; it's grown free range on land that can't support plant agriculture