Why not Zebra if we can domesticate Horses and Donkeys?

Why not Zebra if we can domesticate Horses and Donkeys?

The Zebra stays free in the wild. While Horses were used as a means of commutation and Donkeys are used as a hard labor. Did Human ever try to domesticate Zebras?

There were attempted made to domesticate Zebra in olden days but failed miserable to to the non predictive nature of Zebras.



The Zebras has a strong survival instinct and they are generally alert, responsive animal. It follows a Flight or Fight principle(Runs away or Fight back under threat). 

The Zebra kick are more powerful to break a lion's jaw and they are savage biters.

Bonus

Zebra, Horse and Donkeys belong to the same family  called Hyracotherium(Their Ancestors). The hybrids are called Zonkey(Zebra+Donkey) and Zorse (Zebra+Horse)
References: sciencealert