Although leather soles are classy and very expensive, they cannot be used daily and for rough use.
Rubber is often flexible right off the bat leaving minimal break-in period. Therefore you normally do not feel so stiff when a shoe is made on a rubber sole, even if hand welted. It also being quite sturdy makes it feel comfortable for some people. And naturally it has more shock absorption so when you step you don’t feel the hardness of the pavement as much as you might in the leather sole.
A good rubber sole is virtually indestructible (not really but close). Due to the nature of rubber and what it is intended for, you can really go hard on it and it will last. Rubber is very water resistant so you really don’t have to worry about your feet getting wet, ever.
Rubber soles are more discreet - they don't make this solid impact sound when you walk, they are more comfortable for walking because they absorb the foot strike impacts better.
We promised our customers affordable sandals they would be able to wear anytime, anyplace, anywhere and that is what we have brought you.