your rational should be your bodies own reaction and your instinctual craving for them. if you feel like you cannot handle them right now, dont eat them right now. if in the future you have a hankering for something, eat it IN MODERATION, notice that you may only need one serving of what your body is asking for, notice it may not be the right thing at all.
you really need to work on having a moderate baseline diet set to get your body into homeostasis, focusing on the things you feel best eating before you can even start to access this properly. i feel like it has taken over 5 years of tweaking to find that the most simple diet of only animal fats, some raw and some cooked meats, certain cooked veggies and other raw veggies, raw dairy, salt and seaweed is the personal best for me. i notice my appetite for certain foods change all of the time, it goes in cycles, its very seasonal now, but how i feel physically, mentally and emotionally is much more likely to continue to improve because i dont go through extreme shifts in what i eat, i stick to the basics and if i feel there is something missing i have a little bit of that something, if i feel like i need more i generally eliminate another food for the time being and add whatever felt missing into its place.
i feel like a lot of times when we first start a healing diet we go to such extremes because we are trying to fill nutritional voids and imbalances. i think it may do some good to have mineral and vitamin levels tested and get help rebalancing them by doctors who specialize in this type of orthomolecular medicine. it might not be necessary but i do believe it could save people years of experimentation. also emphasis needs to be on repairing the digestive system and repopulating it with the proper gut microbes. this is why i think its okay to imbibe in certain neolithic foods (raw, grass fed dairy, yogurts and to a lesser extent fermented vegetables) and also take soil organism based probiotics, and even rely on digestive support such as oxbile capsules, and even cooking foods, making broths, and eating a partially cooked paleo type diet if that is what it takes to get people to calm down and learn to practice moderation.
i think for most of us a moderate diet includes animal fats, meats, seafoods and offal, then you will notice we each have certain foods like greens, vegetables, fruits, seaweeds, eggs, dairy, seeds, honey, oil that we choose to eat or not eat depending on how we react to them as individuals.
if you dont want to eat fiber, give it a try, just realize that with out fiberous foods you are going to be on a very low carbohydrate diet where you will need to get adequate ANIMAL fats, and be eating the whole animal instead of just muscle meats. you will need to adjust to VLC and may not be in a state where you can handle a VLC diet.