Leather articles designed right have a traditional look and feel. We live in an artificial plastic age and I appreciate it's contribution to my like and comfort. Plastic just doesn't do it for me. I get off on self-bows, wood arrows with red feathers and leather. Leather arm guards, leather shooting tabs or gloves, leather grips and shelfs on my bow and leather quivers.
Leather is the product of something that was alive.
In a good quality product it is still alive. Rifles today are made of stainless steel and black plastic. For some, this is the best the world has to offer. Give me leather and wood. I suppose the fifth and sixth element could be melded together, but it seems important to me to separate them.