Why zebras cannot be domesticated?

for the same reason wolves, tigers, lions, bears and any other WILD animal can't.

Jared Diamond talks about the fact that zebras can't be domesticated (as opposed to the horse). If we could figure out the *why*, then we'd probably figure out how to do it . . . .

I think it's just genetics. The horse has been domesticated for a beast of burden (it will carry stuff and people, and it will drag stuff and people), and in some cultures it has been used for its milk and meat.

The zebra, AFAIK, hasn't been domesticated for meat or milk, either. I'm sure you could eat it if you shot it like any other wild animal, but it's just not in it's temperment (passed down through genetics) to co-operate with human beings.

Other animals have learned to co-operate with humans, and have had a great symbiotic relationship. Look at all the different kinds of dogs in the world (and how relatively easy many of them live their lives) compared to the number of breeds of wolves.

Zebras and all similar equines lack the ability to carry a person. Why?

Their bodies aren't built for it. Years of evolution and not being domesticated has caused their withers (Their shoulderblades) to weaken. This is not good for the support of a saddle, and therefore, are completely unridable. If you were to sit upon a zebra, they would immediately fall to the ground.

This is why they aren't suitable for anything, other than going, "Pretty striped horsey." :)

I don't feel that humans should domesticate every creature on this planet. However, riding a bear to work would be pretty damn awsome.

A fellow could, with a few decades of careful breeding in favor of docility and strength, produce a striped work animal...

Which would have the exact same utility as the already-available horse, so no one bothers.