Iam not vegetarian but I eat very little meat and a little more fish.
On a personal level I believe that we have developed as omnivores so it is unlikely to be unhealthy to eat some meat. I also think that the amount of meat eaten by many is far more than humans developed eating.
This thread has impressed me in how many people believe it is a personal choice. Regardless of individual choices, it seems to be widely accepted by most (not all) that what offspring choose to eat (in the future) is their own choice.
No one I know in my generation (I'm in my 60s) is vegetarian. I eat less animal protein than all my contemporaries. My children (S & D both in 40s) eat meat. Son is full on omnivore, dislikes most veg. Daughter is more like me but eats meat more than I do.
My son's partner is vegetarian. She likes veg and meat subsitutes, he is really no keen on either of those. Luckily they have no children as their shared diet is appalling. Beige food features highly for both of them and they love a big plate of chips.
Daughter is more like me but has a couple of vegetarian friends. One has chosen to be mostly but not strictly vegan. Never meat, but will cope (away from home) with butter, eggs and cheese in recipes). The other has a meat loving husband and 2 daughters. Whilst sticking with vegetarian food for herself the girls get vegetarian when it is just her and them and offered meat when husband is home. As babies they got a bit a of both and I'm not sure what they now eat.