I buy them quiet often. And I am no vegan. But I read and listened about motivations to go vegan. Health can be a factor.

But I think more common factors are ethics (why kill an animal when I do not have to) and climate effect (cows emmit a huge amount of methane)

And going vegan does not necessary mean that one dislikes texture and taste of meat. Therefore I like the fact that those replacement exist. I buy them maby two times a month. And in my country they exist in different qualities. There are even very basic ones, with low number of ingredients.