We went to Brazil, fell off the carnivore wagon with my wife, then when we got back she didn't want to go back on fully and that made it more inconvenient for me to be so strict. If I had more time/effort to spare, I'd go back on.

You get used to the monotony of the diet and learn to enjoy it. Things like smoked oysters, salmon, lamb, pork, chicken are variety enough imo.