@lioness @imallears @ellerbracke @ayeshasharma
I need to put in my 2 cents worth. First, I have to admit, my kids ate somewhat healthy but I did allow trips to fast food places occasionally, and although at age two my son didn't know what a cookie was, as they got older I did bake desserts like cookies. I, and I think people in general, were much less conscious of healthy eating then, in the 80s and early 90s. Interestingly though, my son and his wife are health nuts to an extreme most of the time. I actually think he eats too few carbs. They are both extremely fit.
My daughter and her husband (he is of Indian heritage and was brought up as a vegetarian but will now eat chicken and fish) also generally eat pretty healthily but they do sometimes indulge in less healthy foods - they both love mac and cheese. So, bottom line, our kids are often influenced more by outside influences than by their parents. My husband and I do eat more healthily now, and have cut way back on our meat consumption portions.

Beyond Burgers and the other one, Impossible Burgers (?) do not have meat but they have been found to be no more healthy than real meat burgers. If anyone lives near a Five Napkin burger, my daughter loves their veggie burger. I have no idea of the nutritional value. She was a vegetarian for a while, actually before she met her husband, but then relapsed. She still eats vegetarian a lot but does also eat meat. Funny aside - my daughter used to write for a blog in NYC, "Woman about Town" and she once wrote an article on becoming a vegetarian and said her mother was upset! I was upset -- not that she became a vegetarian, but that she said that, because I was totally supportive of her. She said the editor wanted her to take that viewpoint. It was also funny because the picture she put of herself on the article was terrible.

There are a few things that they do have to have from their youth. When I visit my son in Denver I always have to make a huge pot of meatballs and sauce. We have it for dinner and then there's enough left for them to freeze for about three more meals for two. Healthy, I don't know. I do use lean meat (92%), and tomatoes are good for you. I add no salt and use unsalted tomatoes in my sauce, and being a very large pot I add a whole bottle of red wine. I figure it cooks for a couple of hours so the alcohol, which being post-liver-transplant I am not supposed to have, has cooked off.

I do have to carefully consider what we will eat when my son-in-law is here. You can only eat so much chicken and my husband expects meat at every dinner.
JK