nods I am vegan for ethical reasons as the industry is killing our planet, animals and people and I just can be part of that. You can get more than enough protein and Iron on a plant based diet if you know what to eat. B12 is trickier, however 40% of the world population is vitamin B12 deficient and only 1% of the world population is plant based so many have to take supplements anyway. Some people have genetic issues and cannot absorb certain vitamins or minerals well so they need to supplement no matter what diet. I for example have issues with vitamin D and B12 absorption so I take multivitamins and get a regular B12 shot. there are several vegan body builders and strongmen. Wold Champion Patrik Baboumian for example but they eat totally different then most plant based folk. Brian Turner has some good videos on that as well.