Eh? I'm MidWest American, I was raised eating meat. It grew in our backyard. I know what bacon tastes like, I know what a burger tastes like: it tastes good. But for a whole list of reasons, I don't eat meat anymore. I would very much like to be reminded of a fat, juicy patty of ground animal muscle.
This still leaves plenty of options for a sandwich, but then I have to worry about buying produce and keeping it fresh. The more variety in what I buy, the bigger the hassle.
Augmentmenting a smaller amount of fresh produce with (freezable) fake meats gives me a lot more options, not to mention the benefits when I eat out (take away bell peppers and most veggie options on the menu vanish)
Plenty of vegetarians/vegans agree with you. Plenty of us do not.
I like the meat substitutes because it gives me that nice umami and chewiness I do not get out of a lot of vegetarian dishes.
Meat sets off pleasant, primal signals in the brain. Having a vegan dish that can replace that is good in my opinion.