What's the point of these things other than possibly shooting them for meat? I know the "special" bathtub makes them hang around, but what makes them show up? Do they "make farming easier" as the sketchy lady you can buy one from says?

I've tried commanding them or moving them. Nothing works.

What are they FOR?

They produce fertilizer in your work bench every so often like a water purifyer makes purified water.
I mainly use it for bomb making and crafting jet.

making a mount with two of their skulls makes a nice decoration i suppose. But for their meat to weigh a pound, its too heavy to keep a bunch of it around in your aid.

Eat, poop and moo.

That's about it.

You crops grow better with them around and you have a ready supply of fertilizer if that's your thing.

As mentioned above, they periodically produce fertilizer that appears in your workbench. The more brahmin you have, the more fertilizer you'll receive.

Isn't fast traveling all it takes to grow crops anyway?

Their sole purpose was to get stuck in between things and get stuck in houses.

I thought they gave you irradiated glowing milk.

But now I just found out they are good for their sh!t.

your two headed cows are important in the production of chems.

no seriously, their poop is the main ingredient in Jet.

They get in the way all the time, that's what they do best! So annoying, why can't we build an animal pen to hold them in one place. I've even found them standing on the roof or standing in a room inside a house. Craziness.

They poop and use said poop to make with the sweet sweet drugs.