I'm not personally, though I eat a minimal amount of meat. A few of his friends are vegan, though certainly not the type to challenge him on his eating habits. I presume this triggered his thoughts on animal welfare, I know he's read and thought about it quite a bit independently.
He's been refusing meat at meals on and off for months, mentioning it more and more and now decided to go veggie. I've pretty much shrugged and said fine, presumed there's little point in trying to force feed an adamant child and just put a little thought into getting all he needs in his diet.
My mum and friend were both a little horrified I've 'allowed' him. Would you allow a child of 7, who was capable of clearly expressing their reasons in response to questioning, to change their diet and have autonomy? I didn't think I was being out there... but my mum does! I think I have memories of all the clear your plate stuff and the feelings about it...