Y'know, if i go and eat a tomato from the garden, it comes per-seasoned with salt, as does most natural food.
Salt is necessary for removing acidity from cells in the brain and body, and helps to prevent muscle cramping during strenuous work. its vital for the absorption of food in your intestines, its vital for all electrical impulses in the body, like nerve and brain functions, salt is necessary to harden bone and keep them in good shape, salt is even necessary to maintaining a healthy libido. Its only natural that we would develop a taste for it.
...Black pepper is overrated.