Typical statement of the carb addict. I was there. What if you try it for 3 months and then you realize: - You sleep better - You have more energy in general - Food cravings gone - Your capacity of focusing increased 10x - Your gut health improves. 90% less gasses with no odor Would you consider that a "diet"? Feeling a lot better 24hours a day is not worth it for the "pleasure" of eating a pizza for 3 minutes? After getting rid of the addiction you won't think in pizza any more, and nothing beats the bite of a Ribeye.
Everyone who has tried something new has felt at least once "more energy" and "focused“ no matter what they tried. This is your body's response to novelty and stress. It's called habituation and stress response. By the way, people feel more energetic just before they die. Blow makes you feel more energetic too so I’ve heard.
You talk by theories you make up in your mind, and you can make an infinite amount of them all with some sense. To have a real opinion on anything you need to experiment it. Try it 3 months, then you can talk, Are you afraid?