What is the significance of chess clock to chess players?

it is just a time to finish the game and get wining in your head thought 

so that we can finish the game in a precise time that we can not exceed it.

playing moves accurately and fast confuses the other

 every move in chess depends on a certain time its according to the chess challenge  game

 i find myself when it sit hours and do my hobbies playing chess and doing the defeat my competition

Moral of the use chess clock is to determine the time of the move,or the total time for all player moves So as not to delay the player from doing his move