I think there are problems with your arguments.
> Ethically: there's no arguing meat eating is better. None. However well you treat animals you're still ultimately going to kill them.
No, there are a lot of arguing about this. There is no ethical consensus on "killing animals" being the "wrong" thing. Hell there is not even consensus on whether an objective ethics is possible.
Organisms consume other organisms. This is part of the cycle of life. Declaring this objectively wrong without exceptions just because you feel bad for the poor animals is a weak argument at its best.
You can talk about the perils of the modern day animal farming which involves treating animals like vegetables and "growing" them in conditions indistinguishable from torture; but that doesn't have to mean "killing animals" is bad per se.
> Environmentally: a hundred reasons to choose a plant based diet, all of which have been cycled here a million times so won't go back through it but we all know it's true.
Yes, but there is research supporting that grain and vegetable farming has a lot of problems as well. Farming in scale in general is a problematic thing. Some even go as far as to state that animal farming can be even less harmful environmentally, when done right. What I'm trying to say is that, this claim hasn't been proven yet. If you want to see counter arguments and relevant research, try following a couple of carnivore diet advocates on social media. I don't have any links to share off the top of my head at the moment and I'm sorry about it. But there is no real consensus here, not so easy.
> Health: again, see pretty much all the research ever. Eating a plant based diet is so much better for weight, health, BMI, etc etc etc
Yes, there are a lot past research about this. But as we can see today there are a lot of problems with those researches as well. A lot of them are being challenged today. Ketogenic and carnivore diets are on the rise and for good reason. USDA's food pyramid is reversed. Fat, eggs and animal protein are no longer the enemy according to many new researches. I suggest you to keep up with the new research as well.
> Taste: this is the kicker imo. If you'd asked me 15 years ago when the vegetarian alternative was a crappy pasta with tomato sauce, I'd have been more tempted to chomp my way into a steak. Nowadays? There is SO much good vegetarian food. Loads of choice, huge range of flavours and in many places it's the vegetarian food that gets the chef's attention, rather than falling back on the Default Meat.
Yes, this may be the kicker for you. For many, animal based foods are still irreplaceable. Not much point talking about this as it's fairly subjective.