Silkworm moths are and INCREDIBLY good example of domestication.
Here's a wild silk moth, their ancestors.
It's a pretty standard moth. It spends most of its life as a caterpillar eating leaves, then turns into a moth, breeds and dies.
These are domestic silkworm moths.
They're much larger, especially the females, because they never have to taste absence in their lives, and can sustain a greater body mass.
They're leiucistic- they don't need camoflague anymore, so they don't bother with it.
They're flightless- the only reason moths fly is to evade predators, find mates and find places to lay eggs, and neither they nor their countless generations of ancestors have ever had to run away from anything, or struggle for anything. They don't bother wasting calories growing wings that can hold them up. Flying is the single most energy burning type of movement there is, so why would they, when everything they could ever want is within arm's reach?
They vastly overproduce silk, so they end up with these huge cocoons.
Now, you might go "but don't we exploit them??? Isn't it bad??"
Traditionally, many caterpillars are boiled in their cocoons, killing them instantly. The caterpillars are then used as food (because they are edible and delicious) and the cocoons unwrapped to make silk thread.
Okay, let me explain further.
Silk moths do not have mouths.
A silk moth, once emerged, slowly starves to death.
This is not because of domestication- this is normal for most moths.
Moths live basically their whole lives as caterpillars. They have, what, four or five days as a moth? Maybe a week. They can't eat. They can't defend themselves. They breed, and then die.
Most silkworms die far, far before they ever become a moth. And most moths die before they get to breed.
So how silkworm farming goes, once you understand it all, is like this:
More caterpillars than would ever survive from their eggs in the wild are born. From the moment of their birth humans provide them with a perfectly safe, perfect temperature habitat with their whole families, where they never run out of carefully picked mulberry leaves (they don't have to eat mulberry but it is their favourite) for their whole lives. They want for nothing, and the rate of their survival goes from one in a hundred or so to basically ninety nine out of a hundred. They live happily, make their cocoons, and then more of them survive past that stage than ever would in the wild. The rest are eaten, far less painfully and than they would in the wild. The many survivors have big orgies and then die of old age, knowing their children will live equally safe, idyllic lives.
And also all the waste product they make in the process that they DO NOT CARE ABOUT becomes one of the most valuable and useful natural materials in existence that until plastic started fucking the world up was very happily used for any fabric that needed to be light and strong.
The VAST majority of animal "exploitation" in farming is the same story. An animal, who by the way does not have a concept of a soul and does not care about what happens to them when they die, lives a life of unthinkable peace and bliss, lives longer than it normally would ever imagine, has some of something it normally produces anyway taken as compensation for the promise of this kind of life continuing basically for the rest of its life, and dies pretty contently, after which its body is usually used much the way it would be in the wild- eaten, which literally none of them mind because that's literally normal and what always happens to dead things.