soles of shoes are provided with design to increase friction
vulcanized rubber affects us today because it is used in tires and in shoe soles
Just as all things wear away under friction, even rock cliffs are worn away by winds and currents, your shoe's soles are rubbed and scraped agains the ground repeatedly, or the bottom of your foot if we're talking about the inside of a shoe.
as long as you need and decision making
Yes they are.
There are three primary reasons.Friction wear between the sole of the shoe and the ground.Material fatigue caused by the constant flexing of the shoe sole.Material selection of the sole.There are no doubt many other minor reasons such as failiure of the support structure, (insole stitching et.c), sweat, and heat etc.
dosole.com
The tread of a shoe is used to increase Elasticity
your soles of your shoes
espadrille
Sports shoes have different treads to provide grip depending on what terrian they are being used on. For example: Soccer shoes have studs in the bottom to provide grip in the slippery mud etc.
For some people, it may seem to affect them but for me, I don't think it really matters. As long as the shoe is light and comfortable, I am able to run in it. Having thick and heavy soles may affect me though.
Christian Louboutin
if your shoes didn't have soles, they would in effect be mocassins and you would wear the bottoms off them in a week or two.
Yes there are. Tap shoes without soles make the shoe more flexible so you can stand on your toes.
The shoe designer most famous for red heels and soles on his shoes is Christian Louboutin. He is a French shoe designer. His unique red bottomed shoes are usually known as "sammy red bottoms".
Christian Louboutin
Leather, cork, rubber, synthetic rubber, and foam rubber are all used in shoe soles of various types.