Will we become like horses did over this century. Horses did a lot of the work and millions of them were needed. Now we keep horses cos they are nice and fun t

Will we become like horses did over this century. Horses did a lot of the work and millions of them were needed. Now we keep horses cos they are nice and fun to have, but we don't need millions of them. Why would an AI need billions of people? I wonder what society will look like in 100 years time. Also, AI cures aging.