Why on earth do we carpet floorboards?

The truck I just bought yesterday... Rubber floor mats... The heel of my gas pedal foot was blowing in the breeze underneath the truck and the top of my foot only reached Midway up onto the pedal... LOL
got a more door over here with only 54k on it and there is no floor pan left from the rubber mat. that is why I got it soo cheap (well a blown /6 too. Lady never changed the oil for 40 of the 54k according to her husband. So you CAN kill a .6 but it takes a while