Just wanted to say I understand- became a vegan in May, but married to an omni who won't watch What the Health / Earthlings / Cowspiracy / Dairy is Scary or read any of the books on veganism. He dated a vegan for two years before me [a LONG time ago in high school] and he has just taken this mentality of "I've heard it all before". He shoves his fingers in his ears and says "la la la la". At the same time, I feel like with me being a vegan for the last six months, I have subconsciously gotten through to him at least a little bit. He developed an aversion to meat! A few months in I was ordering burritos and I always get a potato burrito for me, I asked him if he wanted a chicken or pork burrito. He said "neither, I don't really want meat." Which doesn't SOUND like a big deal, but to hear those words come out of his mouth was a big deal to me. He has always been a "meat and potatoes" man. Now we go to the buffet and he loads up on mashed potatoes and green beans. The green beans might have animal products in them, but at least I don't watch him eat chicken legs and steak and hamburgers and I feel like we've come a long way for six months progress. Point being, you do you. Be an example of a healthy, happy vegan. Don't FORCE the information on him. You might be surprised at how far you can get just showing someone what it looks like to eat plants 3 meals a day. I always show positive reinforcement when he makes plant based choices and let him know it makes me very happy. As for your kid, I would just say to show him that The Physician's Committee for Responsible Medicine says 'Vegetarian diets provide excellent nutrition for all stages of childhood, from birth through adolescence.'