I went vegetarian and things were going great. I was checking my micro and macro nutrients, things were perfect. I got a new job and I had to take a drug test. My creatine levels were too low and I failed/had to repeat the drug test. I ended up having to pee first thing in the morning to make my creatine levels higher. This was the most painful thing I've experienced in my life for about 3 hours as I waited for the place to open. That sucked.
Later, my kid had low iron levels. I imagine I probably did too.
Sure people are able to live a life without meat, but the nutrition from having meat is something I'm finding difficult to replace. We eat meat probably 2 or 3 times per week. Seems like a decent compromise, but I still feel like this is going to age poorly when people become more aware of animal consciousness.