I did carnivore for about two years consisting of just two ribeyes/day with the occasional strip steak or sirloin. It worked well during those two years until it didn't. After it stopped working, I started gaining all the weight back that I'd lost and my energy TANKED. Many carnivores experience the same. Some do well on it, but it seems that if you're fat:protein ratio is too low, you're more likely to experience those symptoms.

I too was in the "carbs are terrible" camp for a very long time, even though my carnivore experience was declining. I figured it was something else. I kept pursuing it to my detriment and I've only recently started figuring out how to get my energy back (thanks Ray Peat).

I'd recommend reading link within this post: #750135. It absolutely blew my mind and the more I follow Ray Peat's work and those who've branched off of him, the more sense things make.

This guy is a great example of someone doing a very high carb diet and only experiencing benefits. I've also strategically added a lot of carbs into my diet. I haven't gained any weight and my energy is coming back. I say "strategically" for a reason as you will discover if you get into the "Peaty" side of things.

The body is very complicated and there is no one-size-fits-all approach. Mostly carnivore may work well for you, but understand that things may change. Always keep an open mind.