I think SPMiller is volunteering to work there.
Indeed, they can take my place in case I get asked!!
I think that having that for a job would lead to numerous problems...
-A human baby needs the mother's milk, humans usually produce just enough while cows have excess milk
-Being a "heffer" wouldn't exactly be flattering...
-It could get really racial, really fast
-It'd make women seem even more like "women", stereotypically, all they're good for is cooking, cleaning, giving birth, and being milked
-It may make some women not want to try to make a real impact in the world, or get a real job, "Oh I'll just get milked. That's easy."
It's like a "BirthMother" (I believe that was the term) from the book "The Giver", a degrading job.