The amount of protein in seeds, tofu, seitan, nuts, legumes is plenty for almost anyone. And if you are power lifting even omnivore lifters take protein shakes after working out usually.
I eat meat and (non-starchy) vegetables. I don't eat like a bodybuilder, but neither is a plant-protein-based diet easy for me.
You're shifting the argument. The point isn't that we need to eat like them, it's that we want to, and meat is delicious.
> The amount of protein in seeds, tofu, seitan, nuts, legumes is plenty for almost anyone.
By that logic, there'd be no point in manufacturing sports cars or macbook pros anymore, because normal cars and Chromebooks have enough power for "almost anyone".
Matter of taste? I don't like it much, never did and I grew up in a family were we ate tons of meat and vegetarian was a dirty word. I like 'a bite' of very good beef, but I could never eat a whole steak; just bores the hell out of me and the taste annoys me after a few bites. Chicken I just don't see the point. Next to a programmer I am a cook (own a restaurant) and I find taste very important; always have. So I think 'meat is delicious' is an opinion of yourself (and often people who never tried much else; people who cook 'without meat' (for whatever reason) often cook very bland; then I can understand it; those meals give 'vegetarian' cooking a very bad name and meat 'automatically' would make those better tasting for a lot of people. I wouldn't eat a barely heated up mashed pumpkin without seasoning either); I prefer other things and sure, if there is a bit of meat in something then it can be nice under the right circumstances.