YANBU to go veggie if you want, but please please please don't bore everyone within earshot or every acquaintance on Facebook with it, no one else cares. If a veggie friend tries to convert me they know full well I will go out and shoot something just to shut them up.
Also please do some serious research before making / encouraging children to do it. Kids / teens need correct nutrition and cutting out a massive food group is extremely bad for them. Even if they appear okay now they will be storing up problems for later. An adult body can withstand a lot of abuse and poor nutrition without becoming ill for a long long time, children can't. Unless for are an incredibly knowledgeable dietician / scientist then please be very careful.
My dsis is a veggie. She is one of the most knowledgeable people I've ever known about food and works very hard to eat well. Just cutting out meat is not good enough.
Almond milk has bugger all calcium in it so if you drink that as a replacement for milk then you will get rickets when you get older unless you find a way to get the required level of calcium. Again, many veggies or vegans just cut out the stuff they don't want to eat and dont bother thinking about the nutrients they are missing and need to replace.
Cats / dogs NEED meat. Your cat supermummymust be a miracle of nature (or actually be very unhealthy).
Animals mask pain or illness INCREDIBLY well as in the wild to show weakness is a sure way to get predated upon or loose your place within the pride / pack / social group which ultimately may threaten your very survival. By the time an animal shows signs of illness then it has usually been unwell for a very very long time. They can live with quite surprising levels of pain / illness / distress for years without owners ever knowing.
I'm willing to bet your cat isn't as healthy as you think.
There's a name for that - animal cruelty.
Ironic when you're probably veggie on 'animal welfare' grounds isn't it,