>>83385876>Doesn't require electricity or fuel
Needs a massive amount of food, far more massive than you need extra when using a bicycle. Because it's a big animal.> Collisions are rare or non-deadly
Wrong, horse collisions are very harmful, was and is a big issue on streets.
It gets worse when you're not strictly selecting for the best most calm horses out of many more than need to be killed, and reserve the streets for them.> Can be used for other purposes
No thanks.> Low maintenance, just needs a place to shit and graze and water
If you're still at like 20 people per 100 square kilometers, maybe. Else drinking water and fields are crucially important areas near human settlements and NOT available for horses.
Bicycles and such with extra cars when needed superior in almost every way.