>>53306537A stallion's cock evolved so Seabiscuit could get up on a mare, get the job done quickly and get out, because of their status as prey animals discouraging intricate, elongated or otherwise focus-intensive mating rituals.
A mare's nerve endings however begin at the start of her vaginal passage and end about 6 inches into it, with the rest being pure muscle. This means the average stallion does not stimulate a mare while in the act of coitus. However. the size and shape of the average human cock is tailored specifically to utterly mindbreak a mare, by repeatedly giving her orgasm after orgasm until she becomes utterly and irretrievably addicted to the feelings her handler gives her, because every stroke casues cascades of feelings that she just wouldn't have experienced otherwise.
Humanity's had 6000 years of experience handling horses and they were drawing cave paintings of Krom fucking his horsie back then just as there's still blokes filling up their fillies today.
