My gripe isn't really with keto, whatever floats your boat really, but it's with diets in general. Dieting is a symptom that something is fundamentally wrong with our relationship with food. And keto, in that, follows a familiar pattern. People fall off the wagon, eat a cake or whatever, there's a period of self-flagellation and guilt, and around it goes.
Phrases like 'insulin response' have become totemic, but in context, of course, these are perfectly normal physiological responses. Yes, a balanced diet such strip out most of the refined and manufactured food, it's not necessary and frankly, the other stuff tastes better, I'm not sure the benefits of bland white rice over nutty brown rice. But then we live in a world where people want microwave rice because twenty minutes is too long. Supermarkets, of course, take a lot of the blame – what fresh food they offer is expensive, whereas manufactured stuff is cheap (and of course, given the choice between low margin perishables and high margin boxes with shelf-lives of months, well, that's where we are) – compounded of course, what fresh they do have, it's selected for transportability and persistence, not taste, hence the surfeit of bland fruit and veg.
I'm not sure anyone 'suffers' from hunger. It's normal to be hungry. The thing is, we live in a society where we don't have to be hungry, so the response to eat whenever. One of the best things anyone can do is to stop snacking between meals. It's hundreds of useless calories and when you come to your meal, you won't enjoy it, and instead it becomes another case of stuffing yourself full of calories you no longer need. Combine with a lifestyle that is increasingly sedentary, well, we're not going to get any smaller. The only thing is to start cooking food properly – preparing an actual meal from ingredients rather than shoving something the microwave or oven, or calling up Deliveroo.