I don't really mind the pretend meaty burgers – I like a good burger, but I'd generally prefer not to eat an actual cow.
That said, I do like the old-school veggie bean burgers, and indeed, they do seem rare on the ground these days unless you make their own. Basically magimix some beans, a bit of onion, garlic, and spices, add enough breadcrumbs to soak up the moisture (this tends to be the main problem, some beans are a bit watery). You can add some egg as a binder and some people recommend giving the beans a brief turn in the oven to dry them a little, but I've found it OK to just use breadcrumbs and not over or under-blend so they remain together in the pan.